Zhanissov, A.T., et al. “The Economic System of Chingistau Cattle Breeders in the Second Half of the 19th — Early 20th Centuries: Transformation of the Equestrian Culture of the Kazakhs”. Bulletin of the Karaganda University History. Philosophy Series, vol. 104, no. 4, Dec. 2021, pp. 35-43, doi:10.31489/2021hph4/35-43.