1. Miyagawa, I., Davidson, R.B., Helms, H.A.Jr., and Wilkinson, B.A. Jr.: 1973, J.Magn.Resonance 10, pp. 156–161.
2. Miyagawa, I., Hayashi, Y., and Koiaki, Y.: 1977, J.Magn.Resonance 25, pp. 183–195.
3. Gruber, K., Forrer, J., Schweiger, A., and Günthard, H.Hs.: 1974, J.Phys.E: Sci.Instrum. 6, pp. 569–574.
4. Biehl, R., Plato, M., and Möbius, K.: 1975, J.Chem.Phys. 63, pp. 3515–3522.
5. Poole, C.P. Jr.: Electrons Spin Resonanse, Inter science Publishers, John Wiley & Sons, Inc., New York, 1967.