Mandych, O., S. Kalinichenko, T. Duyunova, O. Sekovoy, and A. Mykytas. “Competitive Development of Subjects of the Agri-Business: Theory and Practice”. Fundamental and applied researches in practice of leading scientific schools 28, no. 4 (September 1, 2018): 86-91. Accessed April 3, 2020. https://farplss.org/index.php/journal/article/view/511.