1. Adamson, A.W. (1967), Physical Chemistry of Surfaces, 2nd edn, Interscience, NY.
2. Washburn, E.W. (1921), Proc. natn. Acad. Sci., 7, 115–16.
3. Henderson, L.M., Ridgeway, C.M. and Ross, W.B. (1940), Refin. Natur. Gas Mfr, 19, 6, 69–74.
4. Ritter, H.L. and Drake, L.C. (1945), Ind. Engng Chem. analyt. edn, 17, 782–6.
5. Drake, L.C. and Ritter, H.L. (1945), Ind. Engng Chem. analyt. edn, 17, 787–91.