Андрющенко, А. В., Н. В. Лещук, and А. І. Скрипка. “The Forming of Lettucc Variety Examples Collection ( Lactuca Sativa L. )”. Plant varieties studying and protection, no. 1 (March 21, 2006): 49–54. Accessed December 25, 2024. https://journal.sops.gov.ua/article/view/66842.