1. G. Eppert, Chem. Techn. 37 (1985) 294
2. L. S. Ettre, Pure & Appl. Chem. 65 (1993) (4) 819
3. A. Ritchie, in Advances in Chromatography, Vol. 3 (Ed.: J. C. Giddings, R. A. Keller), p. 119, Marcel Dekker, Inc., New York, 1966
4. M. S. Vigdergauz, Chromatographia 11 (1978) 119
5. A. Lowman, Science 96 (1942) 211