1. Dekker, D. (1979)Pharm. Weekblad Sci. Ed. 1, 112.
2. Dekker, D. (1980a)Pharm. Weekblad Sci. Ed. 2, 14.
3. Dekker, D. (1980b)Pharm. Weekblad Sci. Ed. 2, 59.
4. Dekker, D., andD. J. Buijs (1980)Pharm. Weekblad Sci. Ed. 2, 54.
5. Duvivier, J. (1964)J. Chromatog. 19, 352.