Petrychenko, V., O. Korniychuk, and I. Voronetska. “Biological Farming in Conditions of Transformational Changes in the Agrarian Production of Ukraine”. Agricultural Science and Practice 5, no. 2 (July 15, 2018): 3-12. Accessed December 4, 2021. https://agrisp.com/index.php/agrisp/article/view/175.