1. Abragam, A; Bleaney, B. 1970.Electron Paramagnetic Resonance of Transition Ions; Clarendon Press, Oxford.
2. Adar, F. 1978. InThe Porphyrins, Physical Chemistry, Part A; Dolphin, D., Ed.; Academic, New York, pp. 167–209.
3. Allen, D. W.; Wyman, J. 1954.Rev. Hematol. 9, 155.
4. Applequist, J. 1973a.J. Chem. Phys. 58, 4251.
5. Applequist, J. 1973b.J. Am. Chem. Soc. 95, 8255.