Ali, B. and Yusup, S. and Quitain, A.T. and Alnarabiji, M.S. and Kamil, R.N.M. and Kida, T.  (2018) Synthesis of novel graphene oxide/bentonite bi-functional heterogeneous catalyst for one-pot esterification and transesterification reactions.  Energy Conversion and Management, 171.  pp. 1801-1812.  ISSN 01968904