Sheikhi, S., and A. Mansourizadeh. “Development of Porous Asymmetric Polyamide–Imide Torlon® Membranes for Physical CO2 Absorption and Separation”. Journal of Membrane and Separation Technology, vol. 3, no. 4, Dec. 2014, pp. 224-31, doi:10.6000/1929-6037.2014.03.04.6.