1. Abragam, A., 1961, Principles of Nuclear Magnetism, Oxford University Press, London, England.
2. Albert, A. D., Lund, M., and Yeagle, P. L., 1981, Biophys. J. 36: 393.
3. Albert, A. D., Yeagle, P. L., and Litman, B. J., 1982, Biophys. J. 37: 34.
4. Andersen, J., Fellmann, P., Møller, J., and Devaux, P. F., 1981, Biochemistry 20: 4928.
5. Anderson, C. E., 1981, J. Magn. Reson. 44: 109–116.