RETRACTED: Morphometric, hydrological characteristics and genesis of Lakes of the Povolzhskij section of the projected National Park Nizhegorodskoe Zavolzh'eAndrej Astashin, Ol'ga Vatina, Valeriya Podkovyrina, Aleksandr Ogurcov and Evgenij TihanovE3S Web Conf., 420 (2023) 04010DOI: https://doi.org/10.1051/e3sconf/202342004010