Füst, Antal. “Estimation of Solid Mineral Deposit Resources, on the Base of Fuzzy Sets Theory ”. Földtani Közlöny 137, no. 1 (April 30, 2020): 75-82. Accessed April 4, 2025. https://ojs3.mtak.hu/index.php/foldtanikozlony/article/view/2982.