Study of the Ecological State of Lake Alakol in Zhetysu regionGuldana Seitova, Dinara Soltanova, Gaziza Kasseinova, Nursara Muratbek and Assel ButenovaE3S Web of Conf., 390 (2023) 04020DOI: https://doi.org/10.1051/e3sconf/202339004020