1. Transport Phenomena;Bird,2002
2. BP Statistical Review of World Energy, 2005 (www.bp.com, accessed in August 2005).
3. Cavenati, S., 2005. Separation of mixtures CH4/CO2/N2 by adsorption processes. Ph.D. Dissertation, University of Porto, Portugal (in Portuguese).
4. Adsorption equilibrium of methane, carbon dioxide and nitrogen on zeolite 13X at high pressures;Cavenati;Journal of Chemical Engineering and Data,2004
5. Separation of methane and nitrogen by adsorption on carbon molecular sieve;Cavenati;Separation Science and Technology,2005