D. DUBINA, P. USTIMENKO, L. VAKARENKO, P. BOIKO, and M. BOIKO, “The regional econet in a context of protection and regeneration of vegetation of a Steppe zone of Ukraine”, CBJ, vol. 6, no. 3, pp. 325–337, Nov. 2011, Accessed: Nov. 15, 2026. Available: https://www.cbj.kspu.edu/index.php/cbj/article/view/548