1. H. Kamimura: In Proc. Adriatico Conf. on Theoretical Understanding of High
Temperature Superconductivity, ed. by Yu Lu, E. Tosatti (World Scientific, Singapore, 1988), to be published
2. H. Kamimura, S. Matsuno, R. Saito: Solid State Commun. 67, 363 (1988)
3. G.A. Sawatzky: In Proc. Adriatico Conf. on Theoretical Understanding of High Temperature Superconductivity, ed. by Yu Lu, E. Tosatti (World Scientific, Singapore, 1988), to be published. Related references therein and in this conference proceedings
4. H. Kamimura, T. Nakayama, A. Oshiyama, N. Shima, K. Shiraishi: In Proc. 19th Int. Conf. on Physics of Semiconductors, ed. by W. Zawadzki, J.M. Langer Institute of Polish Academy, Warsaw, 1989), to be published
5. S. Sugano, Y. Tanabe, H. Kamimura: Multiplets of Transition Metal. Ions in Crystals (Academic Press. New York, 1970)