FEDORIAK, M. M.; TYMOCHKO, L. I.; SHKROBANETS, O. O.; ZHUK, A. V.; DELI, O. F.; PODOBIVSKIY, S. S.; MIKOLAYCHUK, V. G.; KALYNYCHENKO, O. O.; LEHETA, U. V.; ZAROCHENTSEVA, O. D. Results of Standardized Beekeeper Survey of Honey Bee Colony Losses in Ukraine for Winter 2018-2019. Visnyk of V. N. Karazin Kharkiv National University series «Еcоlogy», n. 23, p. 124-138, 28 Nov. 2020.