1. Mass Spectrometry and its Applications to Organic Chemistry;Beynon,1960
2. Mass Spectrometry of Organic Ions, F.W. McLafferty (Ed.), Academic, New York, 1963.
3. Mass Spectrometry of Organic Compounds;Budzikiewicz,1967
4. K.R. Jennings, J. Chem. Phys. 43 (1965) 4176;
5. K.R. Jennings in R. Bonnett, J.G. Davis (Eds.), Some Newer Physical Methods in Structural Chemistry, United Trade, London, 1967, p. 105.