СПАНКУЛОВА, Л. С.; Абылай A. Б. Influence of increasing life expectancy to economic development. Journal of Economic Research & Business Administration, [S. l.], v. 91, n. 3, p. 55–60, 2015. Disponível em: https://be.kaznu.kz/index.php/math/article/view/665. Acesso em: 24 nov. 2024.