Experimental Study of Hydrogen and Methane Permeation through Asymmetric PEI Membranes. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 69, n. 9, 2014. DOI: 10.11113/jt.v69.3406. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/3406.. Acesso em: 30 apr. 2025.