Trotsenko, V., Kabanets, V., Yatsenko, V., & KolosokІ. (2020). 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, 40(2), 72-78. https://doi.org/10.32782/agrobio.2020.2.9