1. M. Mansuripur, J. Appl. Phys. 61, 1580 (1987)
2. J. Strečka, Physica A. 360, 379 (2006)
3. O. Kahn, In: Molecular Magnetism: From Molecular Assemblies to the Devices Coronado, E., Delhaès, P., Gatteschi, D., Miller, J. (eds.), Springer, Berlin (1996)
4. O. Kahn, Molecular Magnetism (VCH, New York, 1993)
5. G.A. Prinz, Science. 282, 1660 (1998)