Кazbekova С.; Zeinelgabdin А.; Yessenova Г. Analysis of public services in the area of customs and tax administration. Economic series of the Bulletin of L.N. Gumilyov ENU, [S. l.], n. 3, p. 206–221, 2023. DOI: 10.32523/2789-4320-2023-3-206-221. Disponível em: https://bulecon.enu.kz/index.php/main/article/view/627. Acesso em: 21 jan. 2026.