1. J. F. K. Huber, I. Fogy, and C. Fioresi, Chromatographia13, 408 (1980).
2. W. Lindner and H. Ruckendorfer, unpublished results.
3. R. Mestres and H. Susilo, unpublished results.
4. H. Bayzer and A. Zohner, unpublished results.
5. K. Blau and G. King (eds.), Handbook of Derivatisation for Chromatography. London: Heyden. 1977. p. 133.