Bekeshova, A., Z. Dildebayeva, and N. Sailaubekov. “An Empirical Analysis of the Theory of Optimum Currency Areas for the EAEC Countries”. Journal of Economic Research &Amp; Business Administration, vol. 108, no. 2/1, Apr. 2016, https://be.kaznu.kz/index.php/math/article/view/1003.