Breznik, Marko. “Ground Water Inflow into the Deep Building Pit of the Powerhouse of the Srednja Drava Power Station 1”. Geologija 10, no. 1 (December 31, 1967): 127–145. Accessed May 2, 2024. https://www.geologija-revija.si/index.php/geologija/article/view/241.