1. Corval, M., 1970, Bull. Soc. Chim. France, 8–9: 2871.
2. Danchevskaya, M.N. and Torbin, S.N., 1984, Intern. T. Mass Spectrom. Ion Proc., 56: 251.
3. De Leenheer, A.P., Lefevere, M.F., Lanbert, W.E. and Colmet, E. S., 1985, Adv. in Clin. Chem., 24: 111.
4. Kolb, B., 1980, “Applied headspace gas chromatography”, Heyden & Sons Ltd. McLafferty, F.W, 1983, “Tandem mass spectrometry”, Wiley, N.Y..
5. Veith, H.J., 1978, Organic Mass Spectrom., 13(5): 280.