TROTSENKO, V.; KABANETS, V.; YATSENKO, V.; KolosokІ. Models of sunflower productivity formation and their efficiency in the conditions of the north-eastern Forest-Steppe of Ukraine. Bulletin of Sumy National Agrarian University. The series: Agronomy and Biology, v. 40, n. 2, p. 72-78, 26 Oct. 2020.