Huda, W. W. N., and M. Ahmad. “A Comparison of Carbon Molecular Sieve (CMS) Membranes With Polymer Blend CMS Membranes for Gas Permeation Applications”. ASEAN Journal of Chemical Engineering, Vol. 12, no. 1, Dec. 2012, pp. 51-58, https://jurnal.ugm.ac.id/v3/AJChE/article/view/8123.