Gale, Janez, Edvard Höfler, Anton Bergant, and Sandi Cizelj. “DOUBLE-REGULATED VERTICAL AXIAL WATER TURBINE”. Journal of Energy Technology 4, no. 3 (May 24, 2024): 23–32. Accessed December 15, 2025. https://journals.um.si/index.php/jet/article/view/4415.