Galazova, S. S., T. V. Kasaeva, A. M. Ashkhotov, V. V. Rokotyanskaya, and S. V. Evetskaya. “Functional Patterns and Operating Conditions of Regional Socio-Economic Systems in the Russian Federation”. Amazonia Investiga, vol. 7, no. 17, Dec. 2018, pp. 570-8, https://amazoniainvestiga.info/index.php/amazonia/article/view/773.