Bobkov, V. N., Odintsova, E. V., & Bashmakov, V. I. (2016). The Middle Class in the Structure of the Material Security of the Russian Society: Criterion and Quantitative Identification. Living Standards of the Population in the Regions of Russia, 12(3), 18-26. Retrieved from https://www.jour.fnisc.ru/index.php/vcugjournal/article/view/8314