Zilberstein, O. B., Shklyar, T. L., Avtonomova, S. A., & Shilina, M. G. (2018). Analysis of russian medium-size enterprises in the context of federal districts and major municipalities. Amazonia Investiga, 7(14), 128–138. Retrieved from https://amazoniainvestiga.info/index.php/amazonia/article/view/478