Dolenec, Tadej, Sonja Lojen, and Matej Dolenec. “The Permian-Triassic Boundary in the Idrijca Valley (Western Slovenia) : Isotopic Fractionation Between Carbonate and Organic Carbon at the P/Tr Transition”. Geologija 42, no. 1 (December 31, 1999): 165–170. Accessed April 24, 2024. https://www.geologija-revija.si/index.php/geologija/article/view/865.