Markič, Miloš, and Tjaša Kanduč. “Carbon Isotopic Composition of Methane and Its Origin in Natural Gas from the Petišovci-Dolina Oil and Gas Field (Pannonian Basin System, NE Slovenia) – a Preliminary Study”. Geologija 65, no. 1 (July 25, 2022): 59–72. Accessed April 25, 2024. https://www.geologija-revija.si/index.php/geologija/article/view/1834.