Sudsong, N., W. Phiwkliang, B. Jongsomjit, and P. Praserthdam. “Effects of Various Mixed Metal ChloridesAlCl3 in TiCl4/MgCl2/THF Catalytic System on Ethylene Polymerization”. ASEAN Journal of Chemical Engineering, Vol. 14, no. 2, Dec. 2014, pp. 12-18, https://jurnal.ugm.ac.id/v3/AJChE/article/view/8475.