Pinkovetskaia, I., E. Lyubovtseva, D. Arbeláez-Campillo, and M. Rojas-Bahamón. “Small and Medium Enterprises in Russia and Other Countries”. Amazonia Investiga, Vol. 9, no. 25, Jan. 2020, pp. 99-06, https://amazoniainvestiga.info/index.php/amazonia/article/view/1034.