Мельниченко, Г. М. “Features of the Course of Pollination of the Genus Betula L. In Ivano-Frankivsk During the Period of 2013–2015”. The Journal of V.N.Karazin Kharkiv National University. Series «Biology» 260 (1): 38-44. Accessed May 3, 2024. https://periodicals.karazin.ua/biology/article/view/6255.