WASET
Farobie, O. , Achmadi, S. , Darusman, L.. "Utilization of Glycerol Derived from Jatropha-s Biodiesel Production as a Cement Grinding Aid". World Academy of Science, Engineering and Technology, Open Science Index 63, International Journal of Materials and Metallurgical Engineering, (2012), 6(3), 227 - 232.