Beisenova М. U., and Kalmenova М. Т. “Grouping of Administrative-Territorial Entities Depending on the Situation at the Regional Labor Market in a Crisis Period ”. Journal of Economic Research &Amp; Business Administration, vol. 106, no. 6, Apr. 2015, pp. 46-50, https://be.kaznu.kz/index.php/math/article/view/490.