Naimanbayev, B. R., Kairgaliyeva, G., Orynbassarova, G. Z., & Shavkat Rakhimkulov, R. Y. (2019). Features of migration trends between Kazakhstan and Russia. Opción, 35(90-2), 434-445. Recuperado a partir de https://produccioncientificaluz.org/index.php/opcion/article/view/30586