1. Proc. Int. Conf. on Valence instabilities and related narrow band phenomena;Ott,1976
2. Proc. Int. Conf. on Valence instabilities and related narrow band phenomena;Walsh,1976
3. Proc. Int. Conf. on Valence instabilities and related narrow band phenomena;Haen,1976
4. Proc. Int. Conf. on Valence instabilities and related narrow band phenomena;Chouteau,1976