Kiseleva, O., Lebedev, A., Pinkovetskaia, I., Rojas-Bahamón, M. and Arbeláez Campillo, D. (2019) “Specialization and concentration of small and medium enterprises employees: Russian data”, Amazonia Investiga, 8(20), pp. 6-15. Available at: https://www.amazoniainvestiga.info/index.php/amazonia/article/view/59 (Accessed: 26April2024).