NYUSSUPOVA, Gulnara and RODIONOVA, Irina. Demographic Situation and the Level of Human Development of the Republic of Kazakhstan: Regional Aspects. Bulletin of Geography. Socio-economic Series. Online. 1 December 2011. No. 16, pp. 75-87. [Accessed 30 December 2025]. DOI 10.1515/v10089-011-0015-8.