Kairbekov, Z., V. Yemelyanova, A. Maloletnev, and B. Baizhomartov. “Thermocatalytic Hydrogenolysis of Combustible Oil Shales”. Chemical Bulletin of Kazakh National University, Vol. 68, no. 4, Dec. 2012, pp. 119-25, doi:https://doi.org/10.15328/chemb_2012_4119-125.