Davletgaliev С. ., and Mussina А. . “ESTIMATION OF A LAYER OF THE SPRING FLOOD OF RIVERS ZHAYIK-CASPIAN BASIN WITHOUT OBSERVING DATA”. Hydrometeorology and Ecology, no. 3, Mar. 2023, pp. 125-32, https://journal.kazhydromet.kz/kazgidro/article/view/908.