Sudsong, Nittaya, Wanna Phiwkliang, Bunjerd Jongsomjit, and Piyasan Praserthdam. 2014. “Effects of Various Mixed Metal Chlorides- AlCl3 in TiCl4/MgCl2/THF Catalytic System on Ethylene Polymerization”. ASEAN Journal of Chemical Engineering 14 (2), 12-18. https://journal.ugm.ac.id/v3/AJChE/article/view/8848.