Agabekova, A., Tusiphan, A., GudunК., Baikenov, M., Kairbekov, Z., & Zhubanov, K. (2011). Liquefaction of coal of Shubarkul field in catalysts presence. Chemical Bulletin of Kazakh National University, 64(4), 16-20. https://doi.org/https://doi.org/10.15328/chemb_2011_416-20