Liberty L Mguni and  Reinout Meijboom and  Kalala Jalama,  Effect of Calcination Temperature and MgO Crystallite Size on MgO/TiO2 Catalyst System for Soybean Transesterification.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2012, vol. 64(4). 375 - 379
    [viewed 10 May 2024]. Available from: https://publications.waset.org/pdf/11725.