1. and , Electron Paramagnetic Resonance of Transition Ions, Clarendon Press, Oxford, 1970.
2. , and , Electron Paramagnetic Resonance: Elementary Theory and Practical Applications, John Wiley and Sons, New York, 1994.
3. Single crystal E.P.R. studies of some first-row transition ions in hexaimidazole zinc(II)dichloride tetrahydrate
4. in R. L. Carlin (Ed.), Mercel Dekker, New York, 1966, Transition Metal Chemistry, Vol. 3, p. 89.