1. Saunders, R. D. and Smith, H.: Safety aspects of NMR clinical imaging, Br. Med. Bull. 40: 148–154, 1984.
2. Guidelines for evaluating electromagnetic exposure risk for trials of clinical NMR systems: Department of Health and Human Services, Food and Drug Administration, Rockvjlle, Maryland. 1982.
3. Hanley, P. E.: Magnets for medical applications of NMR, Br. Med. Bull. 40: 125–131, 1984.
4. Timms, W. E.: An introduction to magnet design and operation, in Lerski, R. A. (ed.): Physical Principles and Clinical Applications of Nuclear Magnetic Resonance, London, Institute of Physical Sciences in Medicine, 1985, p. 43.
5. Gordon, R. E., Hanley, P. E., Shaw, D., et al.: Localization of metabolites in animals using 31P topical magnetic resonance, Nature 287: 736–738, 1980.