Teng, W. , Ngoh, G. , Yusoff, R. , Aroua, M. , Heng, J. (2015). 'Microwave Assisted Solvent-Free Catalytic Transesterification of Glycerol to Glycerol Carbonate'. World Academy of Science, Engineering and Technology, Open Science Index 105, International Journal of Chemical and Molecular Engineering, 9(9), 1140 - 1143.