Kairbekov, Zhaksyntay, Ermek Aubakirov, Valentina Emelyanova, and Zhannur Myltykbaeva. 2012. “Technology of New Generation of Manufacture of Liquid Products from Coal”. Chemical Bulletin of Kazakh National University 68 (4), 3-8. https://doi.org/https://doi.org/10.15328/chemb_2012_43-8.