Koval, I. V., O. Y. Vinichuk, and S. E. Savostina. “Improving Dairy Plant Procurement in a Competitive Dairy Market of Primorsky Krai”. International Review of Management and Marketing, vol. 6, no. 5S, Aug. 2016, pp. 74-83, https://econjournals.com/index.php/irmm/article/view/2728.