Каленська, С. М., and А. С. Риженко. “Evaluation Weather Conditions for Growing Sunflower (Helianthus Annuus L.) in the Northern Part of the Left-Bank Forest Steppe of Ukraine”. Plant varieties studying and protection 16, no. 2 (August 13, 2020): 162–172. Accessed April 30, 2024. https://journal.sops.gov.ua/article/view/209229.