SHAYAKHMETOVA, B.K.; Omarova Sh.Е.; DROZD, V.G. Use of the mathematical apparatus in the study of indicators of socio-economic development of the Republic of Kazakhstan. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 88, n. 4, p. 80–85, 2017. DOI: 10.31489/2017m4/80-85. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/191. Acesso em: 10 jul. 2025.