1. Natural gas processing with membranes: an overview;Baker;Ind. Eng. Chem. Res.,2008
2. L. Echterhoff and V. K. Pathak, Evaluation of Process Costs for Small Scale Nitrogen Removal from Natural Gas, KBR, GRI-91/0092, 1991.
3. H.S. Meyer and M.S. Henson, Methane selective membranes for nitrogen removal from low quality natural gas—high permeation is not enough, in: Proceedings of the Natural Gas Technologies II: Ingenuity and Innovation, Phoenix, AZ, 2004.
4. The upper bound revisited;Robeson;J. Membr. Sci.,2008
5. Carbon molecular sieve membranes derived from Matrimid® polyimide for nitrogen/methane separation;Ning;Carbon,2014