1. M. Palamareva, B. Kurtev, M. Mladenova, B. Blagoev, J. Chromatogr.,235, 299 (1982), and the references cited therein.
2. L. R. Snyder, M. Palamareva, B. Kurtev, L. Viteva, J. Stefanovsky, in preparation.
3. L. R. Snyder, J. Chromatogr.,245, 165 (1982).
4. L. R. Snyder, Principles of Adsorption Chromatography, Marcel Dekker, New York, 1968.
5. L. R. Snyder, in: High-performance Liquid Chromatography,Cs. Horváth, ed., Vol. 3, Academic Press, New York, 1983, p. 157.