RETRACTED: Assessment of the productivity of river sedimentsAybek Arifjanov, Luqmon Samiyev, Farrukh Babajanov, Suhrob Tadjiboyev and Jamoliddin AkramovE3S Web Conf., 538 (2024) 03010DOI: https://doi.org/10.1051/e3sconf/202453803010