Kapinos, R. V., N. M. Echin, N. I. Chovgan, O. S. Akupiyan, and D. P. Kravchenko. “Regional Aspects of Research of Agricultural Enterprises of Ecological Orientation”. Amazonia Investiga, vol. 8, no. 23, Oct. 2019, pp. 565-73, https://amazoniainvestiga.info/index.php/amazonia/article/view/904.