SADYKOVA, S. T.; SAADAT, Z. The secret of economic development in backward countries. Секреты экономического рaзвития в отстaлых стрaнaх. Journal of Economic Research & Business Administration, [S. l.], v. 115, n. 3/2, 2016. Disponível em: https://be.kaznu.kz/index.php/math/article/view/1450. Acesso em: 22 nov. 2024.