1. Bourke, P. L. J., Dawson, R. W. and Denton, W. H. (1965) J. Chromatogr, 19, 425.
2. Knox, J. H. (1959) Chem. Ind., 1085.
3. Schomberg, G. et al (1976) J. Chromatogr., 122,55; Muller, F. and Oreans, M. (1977) Chromatographic 10, 473.
4. Muller, F. (1983) International Laboratory, July, p. 56.
5. Knopp, D. R. (1979) Handbook of Analytical Derivatisation Reactions, Wiley, New York; Blau, K. and King, G. (1977) Handbook of Derivatives for Chromatography, Heyden, London; Pierce, A. E. (1968) Silylation of Organic Compounds, Pierce Chemical Company, Rockford Illinois.