1. Young, D. M.; Crowell, A. D.Physical Adsorption of Gases; Butterworth: London, 1962; pp 230−231. Gregg, S. J.; Sing, K. S. W.Adsorption, SurfaceArea, and Porosity; Academic Press: London, 1967; pp 68−69.
2. Young, D. M.; Crowell, A. D.Physical Adsorption of Gases; Butterworth: London, 1962; p 230.
3. An examination of the adsorption theory of Brunauer, Emmett, and Teller, and Brunauer, Deming, Deming and Teller