1. Antonaccio, L. D., u. H. Budzikiewicz: Monatsh. Chem.93, 962 (1962), Fußnote 5.
2. Aplin, R. T., and W. T. Pike: Chem. and Ind.1966, 2009.
3. Berkowitz, J., D. A. Bafus, and T. L. Brown: J. Phys. Chem.65, 1380 (1961).
4. Beynon, J.H., R.A. Saunders, and A.E. Williams: The mass spectra of organic molecules, p. 94. Amsterdam: Elsevier 1968.
5. Biemann, K.: Mass spectrometry, S. 177–181 New York: MacGraw Hill 1962.