Zh.K. Kairbekov, S.M. Suimbayeva, I.M. Jeldybayeva, и M.Z.Yessenaliyeva. «KINETICS OF THE HYDROGENATION PROCESS OF THE COAL AT MAMYT DEPOSIT». Academic Scientific Journal of Chemistry, вып. 1, февраль 2020 г., сс. 87-94, http://89.250.84.46/chemistry-technology/article/view/799.