Калдияров, Д., Беделбаева A., and С. Калдияров. “Methodology of Determining the Investment Attraction of the Region”. Journal of Economic Research & Business Administration 124, no. 2 (June 21, 2018): 186–195. Accessed April 3, 2025. https://be.kaznu.kz/index.php/math/article/view/1985.