Brusca, Carlo, Gabor Dessau, Jensen M. Leroy, and Giuliano Perna. “The Deposits of Argentiferous Galena Within the Bellerophon Formation (Upper Permian) of the Southern Alps”. Geologija 15, no. 1 (December 31, 1972): 159–179. Accessed May 2, 2024. https://www.geologija-revija.si/index.php/geologija/article/view/1602.