Improvement of the theory of shaft spillway calculationsAlim Gur’yev, Nartmir Khanov, Marina Chumicheva, Aleksandra Verkhoglyadova, Buchra Hayek and Abderrezak BrakeniE3S Web Conf., 264 (2021) 03031DOI: https://doi.org/10.1051/e3sconf/202126403031