Bulychev, Lev L., Elena A. Ivanova, Irina P. Khominich, Maria A. Gureva, and Daria Yu. Yekomasova. 2016. “Areas of Economic As the Factor of Improvement Regional Competitiveness”. International Journal of Economics and Financial Issues 6 (8S):173-78. https://www.econjournals.com/index.php/ijefi/article/view/3725.