Chan, Y.H. and Quitain, A.T. and Yusup, S. and Uemura, Y. and Sasaki, M. and Kida, T.  (2018) Liquefaction of palm kernel shell in sub- and supercritical water for bio-oil production.  Journal of the Energy Institute, 91 (5).  pp. 721-732.  ISSN 17439671