Ogorelec, Bojan, Stanko Buser, and Miha Mišič. “Manganese Nodules in Jurassic Limestone of the Southern Alps in Slovenia ”. Geologija 49, no. 1 (June 30, 2006): 69–84. Accessed October 27, 2026. https://www.geologija-revija.si/index.php/geologija/article/view/1079.