Tan, Y.H.Y., Abdullah, M.O., Kansedo, J., Saptoro, A. and Hipolito, C.N. 2018. Optimization of Ostrich Eggshell Catalyst in Transesterification Using Waste Cooking Oil via Response Surface Methodology. Journal of Applied Science & Process Engineering. 5, 2 (Sep. 2018), 277-285. DOI:https://doi.org/10.33736/jaspe.795.2018.