Devic, Gordana, Marija Pergal, and Miodrag Pergal. “Polycyclic Aromatic Hydrocarbons in Two Sedimentary Environments of the Tertiary Krepoljin Coal Basin”. Macedonian Journal of Chemistry and Chemical Engineering 42, no. 1 (July 1, 2023): 25–36. Accessed December 11, 2024. https://mjcce.org.mk/index.php/MJCCE/article/view/2552.