Birnazarova А. Single-Industry Cities of Kazakhstan in a Conditions of Modern Economy. Economic series of the Bulletin of L.N. Gumilyov ENU, [S. l.], n. 1, p. 15–19, 2023. Disponível em: https://bulecon.enu.kz/index.php/main/article/view/67. Acesso em: 21 jan. 2026.