1. Benelli C., Caneschi A., Gatteschi D., Pardi L.: Magnetic Molecular Materials (Gatteschi D., Kahn O., Miller J., Palaccio F., eds.), NATO-ASI Series E198, pp. 233–244. Dordrecht: Kluwer Academic Publ. 1991.
2. Guillow O., Kahn O., Oushoorn R.L.: Inorg. Chim. Acta198-200, 119–131 (1992)
3. Bouayad A., Brouca-Cabarrecq Ch., Trombe J.-C.: Inorg. Chim. Acta195, 193–201 (1992)
4. Kutlu I., Mayer G., Oczko G., Legendziewicz J.: Eur. J. Solid State Inorg. Chem.34, 231–239 (1997)
5. Oczko G., Legendziewicz J., Mrozinski J., Meyer G.: J. Alloys Comp.277-275, 219–224 (1998)