Оспанов, С., and С. Кондыбаева. “Optimizing Econometric Model of Determination of Cost of Housing on the Basis of State Policy of Republic of Kazakhstan”. Journal of Economic Research &Amp; Business Administration, vol. 120, no. 2, June 2017, pp. 57-63, https://be.kaznu.kz/index.php/math/article/view/1869.