For citations:
Bogomolov P.L., Feoktistova N.Yu., Kropotkina M.V., Surov A.V. Use of Internet resources to estimate the abundance of species contacting with humans (with an example of the common hamster (Cricetus cricetus L., 1758) (Cricetidae, Rodentia)). Povolzhskiy Journal of Ecology. 2021;(4):458-467. (In Russ.) https://doi.org/10.35885/1684-7318-2021-4-458-467