1. D. M. RUTHVEN, Principles of Adsorption and Adsorption Processes, pp. 124–125, John Wiley & Sons, New York (1984)
2. R. T. YANG, Gas Separation by Adsorption Processes, pp. 119–120, Butterworths, Boston (1987)
3. Mechanisms of surface flow
4. J. OSCIK, Adsorption, pp. 36–42, I. L. COOPER, Trans. Ed. Ellis Horwood, Chichester (1982)