@article{2002274, title={Methanol-Mediated Extraction of Coal Liquid (4)}, author={Akimitsu MATSUMURA and Shinya SATO and Ikuo SAITO and Koji UKEGAWA}, journal={Journal of the Japan Institute of Energy}, volume={81}, number={4}, pages={274-278}, year={2002}, doi={10.3775/jie.81.274} }