Gladkova, V. E., Yakhyaev, M. A., Korolkov, V. E., Smirnova, I. A., Litvinenko, I. L., & Pinkovetskaya, J. S. (2018). The access of russian small enterprises to public procurement markets: data analysis. Amazonia Investiga, 7(15), 20–31. Retrieved from https://amazoniainvestiga.info/index.php/amazonia/article/view/374