Samadhi, Tjokorde Walmiki, Subagjo Subagjo, Kevin R. Lismana, and Khasin Fuadi. 2013. “Synthesis of -Al2O3 Catalyst Support from Kaolin of Indonesian Origin”. Journal of Engineering and Technological Sciences 43 (2):113-26. https://doi.org/10.5614/itbj.eng.sci.2011.43.2.3.