Zhanbosinova А. С., and Potapova Н. А. . “Protocols of Extra-Judicial Instances As a Source for the Study of Mass Operations of 1937-1938 in the Kazakh SSR”. Bulletin of L.N. Gumilyov Eurasian National University. Historical Sciences. Philosophy. Religious Studies, vol. 145, no. 4, Dec. 2023, pp. 74-91, doi:10.32523/2616-7255-2023-145-4-74-91.