Coconut husk ash as heterogenous catalyst for biodiesel production from cerbera manghas seed oilHusni Husin, Abubakar Abubakar, Suci Ramadhani, Cici Ferawati Br. Sijabat and Fikri HasfitaMATEC Web Conf., 197 (2018) 09008DOI: https://doi.org/10.1051/matecconf/201819709008
