1. Molecular Sieve Zeolite Technology: The First Twenty-Five Years
2. Keller, G.E. II and R.L. Jones, “A New Process for Adsorption-Separation of Gas Streams”, ACS Symposium Series 135 (1980), p. 275-286.
3. Pressure Swing Adsorption
4. Ruthven, D.M., “Adsorption in A, X, and Y Zeolites: Thirty Years of Science and Technology”, Proc. VI Intern. Zeolite Conference, D. Olson and A. Bisio, Editors, Butterworths Publications, Guildford, Surrey, England (1983), P. 31.