W. Wukovits, M. Chudzicki, A. Makaruk, A. Friedl, Simulation Study on the Applicability and Performance of Conventional and Reverse-Selective Membranes for Upgrading of H₂/CO₂ Mixtures via Gas-Permeation, Chemical Engineering Transactions. 29 (2012) 1171-1176. doi:10.3303/CET1229196.