1. International Energy Outlook 2010, in, U.S. Energy Information Administration, Washington, D.C., 2010.
2. Upgrading low-quality natural gas with H2S- and CO2-selective polymer membranes: Part I. Process design and economics of membrane stages without recycle streams;Hao;J. Membr. Sci.,2002
3. Volume and distribution of subquality natural gas in the United States;Meyer;GasTIPS,2000
4. Hybrid processes for the removal of acid gases from natural gas;Bhide;J. Membr. Sci.,1998
5. K. Amo, R.W. Baker, V.D. Helm, T. Hofmann, K.A. Lokhandwala, I. Pinnau, M.B. Ringer, T.T. Su, L. Toy, J.G. Wijmans (Membrane Technology and Research, Inc., Menlo Park, CA), Low-Quality Natural Gas Sulfur Removal/Recovery, Final Report (1998), Department of Energy, Contract No. DE-AC21-92MC28133--01