1. Department of Optical Materials, Osaka National Research Institute, Ikeda, Osaka 563, Japan
2. Department of Computational Science, Faculty of Science, Kanazawa University, Kanazawa 920-11, Japan
3. Secretarial Department, Kinjo College, Matto 924, Japan
4. Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560, Japan