GRAY, Alison et al. Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020: the combined effects of operation size, migration and queen replacement. In Journal of apicultural research. ISSN 0021-8839, 2023, vol. 62, iss. 2, s. 204-210 [7]. Dostupné na internete:<https://doi.org/10.1080/00218839.2022.2113329> Indexované v: CCC, WoS, SCOPUS