Каленська, С. М., and А. С. Риженко. 2020. “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 (2):162-72. https://doi.org/10.21498/2518-1017.16.2.2020.209229.