Experimental investigation of water turbine with oscillating blades Rositsa Velichkova, Martin Pushkarov, Iskra Simova, Detelin Markov, Ivan Denev and Radostina Angelova E3S Web Conf., 404 (2023) 01008 Published online: 24 July 2023 DOI: 10.1051/e3sconf/202340401008