Рябовол, Л. О. “Determination of Temperature Rate for Formation of Active Collection of Plant Material of the Coffee Chicory (Сichorium Intybus l.) and Sugar Beet (Beta Vulgaris l.)”. Plant varieties studying and protection, no. 1(11) (October 29, 2010): 77–81. Accessed August 11, 2022. http://journal.sops.gov.ua/article/view/59477.