1. Casy, A. F.: PMR Spectroscopy in Medicinal and Biological Chemistry: New York: Academic Press 1971.
2. Dickerson, R. E., Geis, I.: The Structure and Action of Proteins. New York: Harper and Row 1969.
3. Bovey, F. A., et al.: Accounts chem. Res.5, 193 (1972).
4. Ehrenberg, A., Malmström, B. G., Vänngärd, T.: Magnetic Resonance in Biological Systems, Proc. 2nd Int. Conf., Stockholm 1966. New York: Pergamon Press 1967.
5. Fujiwara, S., Piette, L. H.: Recent Developments of Magnetic Resonance in Biological Systems. Tokyo: Hirokawa 1968.