New approach to the optimal planning of maintenance and repairs of equipment for hydropower facilitiesIgor Kovalev, Alexandra Lifar, Vasiliy Losev, Zinaida Shaporova, Valeria Podoplelova, Dmitry Borovinsky and Mansur YodgorovE3S Web of Conf., 390 (2023) 06031DOI: https://doi.org/10.1051/e3sconf/202339006031