Kiseleva, O. V., A. V. Lebedev, I. S. Pinkovetskaia, Magda J. Rojas-Bahamón, and Diego Felipe Arbeláez Campillo. “Specialization and Concentration of Small and Medium Enterprises Employees: Russian Data”. Amazonia Investiga 8, no. 20 (June 25, 2019): 6–15. Accessed July 3, 2024. https://amazoniainvestiga.info/index.php/amazonia/article/view/59.