Varga, Andrea, Béla raucsik, Hámorné VidóMária, and Ágnes Rostási. “Isotope Geochemistry and Characterization of Hydrocarbon Potential of Black Shale from Obánya Siltstone Formation”. Földtani Közlöny 137, no. 4 (April 21, 2020): 449-472. Accessed November 6, 2025. https://ojs3.mtak.hu/index.php/foldtanikozlony/article/view/2859.