Gajica, G.

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  • Gajica, G. (4)
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Author's Bibliography

Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia)

Šajnović, Aleksandra; Burazer, Nikola; Veselinović, Gorica; Stojadinović, Sanja M.; Gajica, G.; Trebše, P.; Glavaš, N.; Jovančićević, Branimir

(Elsevier, 2023)

TY  - JOUR
AU  - Šajnović, Aleksandra
AU  - Burazer, Nikola
AU  - Veselinović, Gorica
AU  - Stojadinović, Sanja M.
AU  - Gajica, G.
AU  - Trebše, P.
AU  - Glavaš, N.
AU  - Jovančićević, Branimir
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6278
AB  - In Sečovlje Salina Nature Park, the therapeutic mud matured in the natural sedimentary environmental site. This work aimed to determine the influence of the peloid maturation process on the hydrocarbon and elemental distributions, as well as changes in morphology. For this purpose, the sample before and after maturation was examined using various methods. n-Alkanes were the most abundant among saturated hydrocarbons in both immature and mature peloid samples. The results showed that the maturation mainly influenced the change in distribution and concentration (from 378 to 1958 ppm) of n-alkanes. The organic matter (OM) of the immature peloid sample was characterized by a slight prevalence of long-chain and odd carbon-numbered n-alkanes, maximizing at n-C27. However, mature peloid's OM showed a similar share of short-, mid- and long-chain n-alkanes with a slight dominance of short-chain members, maximizing at n-C16. The origin of short-chain and even carbon-numbered n-alkanes was attributed to microbial precursors (e.g., Leptolyngbyaceae). Hopanes were considerably more dominant compared to steranes in both peloids. The hopane series of immature peloid was characterized by the dominance of 22,29,30-trinor-hop-5(6)-ene (C27 hopene), as well as the presence of C30-hop-22(29)-ene (diploptene), which are widespread in cyanobacterial species. The aromatic fraction of immature peloid pointed to the predominance of polycyclic aromatic hydrocarbons (PAHs). As peloid aging progressed, the sample was richer in methyl-branched alkanes, carboxylic acids, their methyl esters, and thermodynamically more stable hopanes and steranes. The presence of elements with toxicological relevance during maturation was reduced below the limits prescribed in most of the directives for cosmetic products. It specifically refers to: As, Ni and Se. A higher concentration of total sulfur in the mature peloid can be related to gypsum precipitation in the summer and/or more intensive microbial activity.
PB  - Elsevier
T2  - Science of The Total Environment
T1  - Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia)
VL  - 897
SP  - 165424
DO  - 10.1016/j.scitotenv.2023.165424
ER  - 
@article{
author = "Šajnović, Aleksandra and Burazer, Nikola and Veselinović, Gorica and Stojadinović, Sanja M. and Gajica, G. and Trebše, P. and Glavaš, N. and Jovančićević, Branimir",
year = "2023",
abstract = "In Sečovlje Salina Nature Park, the therapeutic mud matured in the natural sedimentary environmental site. This work aimed to determine the influence of the peloid maturation process on the hydrocarbon and elemental distributions, as well as changes in morphology. For this purpose, the sample before and after maturation was examined using various methods. n-Alkanes were the most abundant among saturated hydrocarbons in both immature and mature peloid samples. The results showed that the maturation mainly influenced the change in distribution and concentration (from 378 to 1958 ppm) of n-alkanes. The organic matter (OM) of the immature peloid sample was characterized by a slight prevalence of long-chain and odd carbon-numbered n-alkanes, maximizing at n-C27. However, mature peloid's OM showed a similar share of short-, mid- and long-chain n-alkanes with a slight dominance of short-chain members, maximizing at n-C16. The origin of short-chain and even carbon-numbered n-alkanes was attributed to microbial precursors (e.g., Leptolyngbyaceae). Hopanes were considerably more dominant compared to steranes in both peloids. The hopane series of immature peloid was characterized by the dominance of 22,29,30-trinor-hop-5(6)-ene (C27 hopene), as well as the presence of C30-hop-22(29)-ene (diploptene), which are widespread in cyanobacterial species. The aromatic fraction of immature peloid pointed to the predominance of polycyclic aromatic hydrocarbons (PAHs). As peloid aging progressed, the sample was richer in methyl-branched alkanes, carboxylic acids, their methyl esters, and thermodynamically more stable hopanes and steranes. The presence of elements with toxicological relevance during maturation was reduced below the limits prescribed in most of the directives for cosmetic products. It specifically refers to: As, Ni and Se. A higher concentration of total sulfur in the mature peloid can be related to gypsum precipitation in the summer and/or more intensive microbial activity.",
publisher = "Elsevier",
journal = "Science of The Total Environment",
title = "Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia)",
volume = "897",
pages = "165424",
doi = "10.1016/j.scitotenv.2023.165424"
}
Šajnović, A., Burazer, N., Veselinović, G., Stojadinović, S. M., Gajica, G., Trebše, P., Glavaš, N.,& Jovančićević, B.. (2023). Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia). in Science of The Total Environment
Elsevier., 897, 165424.
https://doi.org/10.1016/j.scitotenv.2023.165424
Šajnović A, Burazer N, Veselinović G, Stojadinović SM, Gajica G, Trebše P, Glavaš N, Jovančićević B. Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia). in Science of The Total Environment. 2023;897:165424.
doi:10.1016/j.scitotenv.2023.165424 .
Šajnović, Aleksandra, Burazer, Nikola, Veselinović, Gorica, Stojadinović, Sanja M., Gajica, G., Trebše, P., Glavaš, N., Jovančićević, Branimir, "Changes in hydrocarbons and elemental distribution in peloids during maturation processes (Sečovlje Salina Nature Park Slovenia)" in Science of The Total Environment, 897 (2023):165424,
https://doi.org/10.1016/j.scitotenv.2023.165424 . .

Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).

Gajica, G.; Šajnović, Aleksandra; Schwarzbauer, J.; Kostić, A.; Jovančićević, Branimir; Stojanović, Ksenija A.

(European Association of Geoscientists & Engineers, 2021)

TY  - CONF
AU  - Gajica, G.
AU  - Šajnović, Aleksandra
AU  - Schwarzbauer, J.
AU  - Kostić, A.
AU  - Jovančićević, Branimir
AU  - Stojanović, Ksenija A.
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5190
AB  - The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined.

The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently on kerogen type. The LPs from the CS pyrolysis have the distributions of biomarkers similar to those in crude oils generated in an early to main stage of “oil window“. The biomarker data suggests that mixed type I/II kerogen attained slightly higher maturity level by the CS pyrolysis than type I kerogen. The isotopic signatures of n-alkanes in LPs obtained by the OS pyrolysis are isotopically lighter than in initial bitumen, independently on kerogen type, whereas in liquid products from the CS they become heavier; showing more pronounced difference for type I kerogen. The results indicate that δ13C data should be used with caution in interpretation of samples having different maturity and particularly of LPs obtained by different system pyrolysis.
PB  - European Association of Geoscientists & Engineers
C3  - Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)
T1  - Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).
VL  - 2021
DO  - 10.3997/2214-4609.202134040
ER  - 
@conference{
author = "Gajica, G. and Šajnović, Aleksandra and Schwarzbauer, J. and Kostić, A. and Jovančićević, Branimir and Stojanović, Ksenija A.",
year = "2021",
abstract = "The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined.

The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently on kerogen type. The LPs from the CS pyrolysis have the distributions of biomarkers similar to those in crude oils generated in an early to main stage of “oil window“. The biomarker data suggests that mixed type I/II kerogen attained slightly higher maturity level by the CS pyrolysis than type I kerogen. The isotopic signatures of n-alkanes in LPs obtained by the OS pyrolysis are isotopically lighter than in initial bitumen, independently on kerogen type, whereas in liquid products from the CS they become heavier; showing more pronounced difference for type I kerogen. The results indicate that δ13C data should be used with caution in interpretation of samples having different maturity and particularly of LPs obtained by different system pyrolysis.",
publisher = "European Association of Geoscientists & Engineers",
journal = "Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)",
title = "Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).",
volume = "2021",
doi = "10.3997/2214-4609.202134040"
}
Gajica, G., Šajnović, A., Schwarzbauer, J., Kostić, A., Jovančićević, B.,& Stojanović, K. A.. (2021). Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).. in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021)
European Association of Geoscientists & Engineers., 2021.
https://doi.org/10.3997/2214-4609.202134040
Gajica G, Šajnović A, Schwarzbauer J, Kostić A, Jovančićević B, Stojanović KA. Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system).. in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021). 2021;2021.
doi:10.3997/2214-4609.202134040 .
Gajica, G., Šajnović, Aleksandra, Schwarzbauer, J., Kostić, A., Jovančićević, Branimir, Stojanović, Ksenija A., "Molecular and isotope composition of biomarkers in immature oil shale and its liquid pyrolysis products (open and closed system)." in Conference Proceedings, 30th International Meeting on Organic Geochemistry (IMOG 2021), 2021 (2021),
https://doi.org/10.3997/2214-4609.202134040 . .

Heavy Metals Distribution, Environmental and Health Risk, Sources, and Origin in Soil from European Beech Forests

Štrbac, S.; Ranđelović, Danijela; Gajica, G.; Stojadinović, Sanja M.; Veselinović, G.; Orlić, Jovana; Kašanin-Grubin, Milica

(Belgrade : Serbian Chemical Society, 2021)

TY  - CONF
AU  - Štrbac, S.
AU  - Ranđelović, Danijela
AU  - Gajica, G.
AU  - Stojadinović, Sanja M.
AU  - Veselinović, G.
AU  - Orlić, Jovana
AU  - Kašanin-Grubin, Milica
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4920
AB  - Forests cover about 40% of Earth’s surface, while is 42% of the European Unions’ total land area is covered by forests and wooded land [1]. Forest ecosystems are open and dynamic systems that exchange matter with other systems such as the atmosphere, hydrosphere, and biosphere [1]. Nowadays, in addition to the exchange of substances necessary for its functioning, there is also an exchange of polluting substances. Heavy metals in forest soil can originate from natural and anthropogenic processes and their high concentration can be toxic for ecosystems and humans [2]. The aim of this study is to determine: (i) heavy metal distribution in forest soil; (ii) environmental and health risk; (iii) the source of heavy metals; (iv) the origin of heavy metals; and (v) influence of the geological substrate on heavy metal contents. Soil samples were collected from European mountain beech forests in 11 countries: Bosnia and Herzegovina, Bulgaria, Czech Republic, Germany, Italy, Poland, Romania, Serbia, Slovakia, Slovenia, and Spain. Since European beech forests grow on a wide range of geological settings, during this research terrestrial ecosystems that lie on five major bedrock groups (andesite, carbonate, conglomerate, granite, and sandstone) were investigated. The average abundance order of heavy metal contents in forest soil samples is Cr > Zn > Ni > Pb > Cu > Co > Cd. According to geo-statistical analysis soil samples with the lowest heavy metal contents belong to cambisol soil type, on sandstone, and granite substrate, and with the highest contents belong luvisols and rendzina soil types on limestone and dolomite substrate. The concentration of most heavy metals doesn’t show a systematic pattern with depth. Considering enrichment factor (EF) Pb, Sb, Cd and As, have moderate enrichment, or moderately severe enrichment in the surface soil layer. Mercury has severe enrichment. The highest values of hazard quotient pathways are noticed for ingestion in the children population, especially in the case of Pb. The Pearson correlation coefficient revealed a positive correlation among most of the elements indicating one or more common sources of heavy metals. Based on the Positive Matrix Factorization (PMF) V, Ni, Cu and Th were provided the highest percentage contribution for Factor 1, As, and Se for Factor 1 and Factor 3, Hg for Factor 4, and Cd for Factor 5. Principal Component Analysis (PCA) showed that Principle Component 1 (PC1) was mainly loaded with V, Ni, Cu, As, Se, and Th with similar high values, and Cd and Hg were strongly correlated in the Principle Component 2 (PC2). Taking into account all results it can be concluded that heavy metal concentrations in European beech forests soil are mainly determined by the geological substrate.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of Abstracts 21st; European Meeting on Environmental Chemistry
T1  - Heavy Metals Distribution, Environmental and Health Risk, Sources, and Origin in Soil from European Beech Forests
SP  - 130
EP  - 130
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4920
ER  - 
@conference{
author = "Štrbac, S. and Ranđelović, Danijela and Gajica, G. and Stojadinović, Sanja M. and Veselinović, G. and Orlić, Jovana and Kašanin-Grubin, Milica",
year = "2021",
abstract = "Forests cover about 40% of Earth’s surface, while is 42% of the European Unions’ total land area is covered by forests and wooded land [1]. Forest ecosystems are open and dynamic systems that exchange matter with other systems such as the atmosphere, hydrosphere, and biosphere [1]. Nowadays, in addition to the exchange of substances necessary for its functioning, there is also an exchange of polluting substances. Heavy metals in forest soil can originate from natural and anthropogenic processes and their high concentration can be toxic for ecosystems and humans [2]. The aim of this study is to determine: (i) heavy metal distribution in forest soil; (ii) environmental and health risk; (iii) the source of heavy metals; (iv) the origin of heavy metals; and (v) influence of the geological substrate on heavy metal contents. Soil samples were collected from European mountain beech forests in 11 countries: Bosnia and Herzegovina, Bulgaria, Czech Republic, Germany, Italy, Poland, Romania, Serbia, Slovakia, Slovenia, and Spain. Since European beech forests grow on a wide range of geological settings, during this research terrestrial ecosystems that lie on five major bedrock groups (andesite, carbonate, conglomerate, granite, and sandstone) were investigated. The average abundance order of heavy metal contents in forest soil samples is Cr > Zn > Ni > Pb > Cu > Co > Cd. According to geo-statistical analysis soil samples with the lowest heavy metal contents belong to cambisol soil type, on sandstone, and granite substrate, and with the highest contents belong luvisols and rendzina soil types on limestone and dolomite substrate. The concentration of most heavy metals doesn’t show a systematic pattern with depth. Considering enrichment factor (EF) Pb, Sb, Cd and As, have moderate enrichment, or moderately severe enrichment in the surface soil layer. Mercury has severe enrichment. The highest values of hazard quotient pathways are noticed for ingestion in the children population, especially in the case of Pb. The Pearson correlation coefficient revealed a positive correlation among most of the elements indicating one or more common sources of heavy metals. Based on the Positive Matrix Factorization (PMF) V, Ni, Cu and Th were provided the highest percentage contribution for Factor 1, As, and Se for Factor 1 and Factor 3, Hg for Factor 4, and Cd for Factor 5. Principal Component Analysis (PCA) showed that Principle Component 1 (PC1) was mainly loaded with V, Ni, Cu, As, Se, and Th with similar high values, and Cd and Hg were strongly correlated in the Principle Component 2 (PC2). Taking into account all results it can be concluded that heavy metal concentrations in European beech forests soil are mainly determined by the geological substrate.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of Abstracts 21st; European Meeting on Environmental Chemistry",
title = "Heavy Metals Distribution, Environmental and Health Risk, Sources, and Origin in Soil from European Beech Forests",
pages = "130-130",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4920"
}
Štrbac, S., Ranđelović, D., Gajica, G., Stojadinović, S. M., Veselinović, G., Orlić, J.,& Kašanin-Grubin, M.. (2021). Heavy Metals Distribution, Environmental and Health Risk, Sources, and Origin in Soil from European Beech Forests. in Book of Abstracts 21st; European Meeting on Environmental Chemistry
Belgrade : Serbian Chemical Society., 130-130.
https://hdl.handle.net/21.15107/rcub_cherry_4920
Štrbac S, Ranđelović D, Gajica G, Stojadinović SM, Veselinović G, Orlić J, Kašanin-Grubin M. Heavy Metals Distribution, Environmental and Health Risk, Sources, and Origin in Soil from European Beech Forests. in Book of Abstracts 21st; European Meeting on Environmental Chemistry. 2021;:130-130.
https://hdl.handle.net/21.15107/rcub_cherry_4920 .
Štrbac, S., Ranđelović, Danijela, Gajica, G., Stojadinović, Sanja M., Veselinović, G., Orlić, Jovana, Kašanin-Grubin, Milica, "Heavy Metals Distribution, Environmental and Health Risk, Sources, and Origin in Soil from European Beech Forests" in Book of Abstracts 21st; European Meeting on Environmental Chemistry (2021):130-130,
https://hdl.handle.net/21.15107/rcub_cherry_4920 .

The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia)

Gajica, G.; Šajnović, Aleksandra; Stojanović, Ksenija A.; Jovančićević, Branimir

(IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk, 2018)

TY  - CONF
AU  - Gajica, G.
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija A.
AU  - Jovančićević, Branimir
PY  - 2018
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5177
AB  - The amount and the composition of liquid hydrocarbons (HCs) obtained by pyrolysis of oil
shale depend on kerogen type, as well as pyrolytic system and conditions [1]. The aim of this study
was to compare HCs composition of bitumen isolated from raw oil shale samples (osh) and shale oils
obtained by pyrolysis of oil shales in an open system (os) and close system (cs) (Table 1).
Investigation has been made on immature outcrop oil shale samples (vitrinite reflectance of 0.41 %
Rr) from the Aleksinac deposit (Serbia). Pyrolysis experiments were performed on the two selected
samples, which have shown the highest quantity of total organic carbon (TOC > 13 %) and high HCs
generation potential (Hydrogen Index, HI > 615 mg HCs/g TOC) in the studied sample set [2].
The HCs composition of the shale oils obtained by open system pyrolysis indicates low
maturity. They are similar to distributions of HCs in bitumens isolated from raw (initial) oil shales
(Table 1). Therefore open system pyrolysis can be useful for assessment of source and depositional
environment of organic matter. On the other head, shale oils obtained by pyrolysis in the close system
have distributions of HCs which correspond to higher maturity and they are similar to composition
of HCs in crude oil, generated in early stage of “oil window” (Table 1). Therefore, for artificial
generation of shale oil (from immature oil shale), having composition comparable to crude oil, the
close system pyrolysis is required. CPI – Carbon Preference Index, calculated from distributions of n-alkanes; Rc – calculated vitrinite
reflectance = 0.49 x C29ααα20S/20R + 0.33; / – Not determined due to the absence of C29 αββ 20Rsterane in these samples.
PB  - IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk
C3  - 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings
T1  - The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia)
SP  - 809
DO  - 10.17223/9785946217408/556
ER  - 
@conference{
author = "Gajica, G. and Šajnović, Aleksandra and Stojanović, Ksenija A. and Jovančićević, Branimir",
year = "2018",
abstract = "The amount and the composition of liquid hydrocarbons (HCs) obtained by pyrolysis of oil
shale depend on kerogen type, as well as pyrolytic system and conditions [1]. The aim of this study
was to compare HCs composition of bitumen isolated from raw oil shale samples (osh) and shale oils
obtained by pyrolysis of oil shales in an open system (os) and close system (cs) (Table 1).
Investigation has been made on immature outcrop oil shale samples (vitrinite reflectance of 0.41 %
Rr) from the Aleksinac deposit (Serbia). Pyrolysis experiments were performed on the two selected
samples, which have shown the highest quantity of total organic carbon (TOC > 13 %) and high HCs
generation potential (Hydrogen Index, HI > 615 mg HCs/g TOC) in the studied sample set [2].
The HCs composition of the shale oils obtained by open system pyrolysis indicates low
maturity. They are similar to distributions of HCs in bitumens isolated from raw (initial) oil shales
(Table 1). Therefore open system pyrolysis can be useful for assessment of source and depositional
environment of organic matter. On the other head, shale oils obtained by pyrolysis in the close system
have distributions of HCs which correspond to higher maturity and they are similar to composition
of HCs in crude oil, generated in early stage of “oil window” (Table 1). Therefore, for artificial
generation of shale oil (from immature oil shale), having composition comparable to crude oil, the
close system pyrolysis is required. CPI – Carbon Preference Index, calculated from distributions of n-alkanes; Rc – calculated vitrinite
reflectance = 0.49 x C29ααα20S/20R + 0.33; / – Not determined due to the absence of C29 αββ 20Rsterane in these samples.",
publisher = "IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk",
journal = "10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings",
title = "The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia)",
pages = "809",
doi = "10.17223/9785946217408/556"
}
Gajica, G., Šajnović, A., Stojanović, K. A.,& Jovančićević, B.. (2018). The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia). in 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings
IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk., 809.
https://doi.org/10.17223/9785946217408/556
Gajica G, Šajnović A, Stojanović KA, Jovančićević B. The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia). in 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings. 2018;:809.
doi:10.17223/9785946217408/556 .
Gajica, G., Šajnović, Aleksandra, Stojanović, Ksenija A., Jovančićević, Branimir, "The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia)" in 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings (2018):809,
https://doi.org/10.17223/9785946217408/556 . .