[1] NATL LAB HIGH ENERGY PHYS, KEK, TSUKUBA, IBARAKI 305, JAPAN
[2] UNIV TSUKUBA, INST APPL PHYS, TSUKUBA 305, JAPAN
[3] TOKYO METROPOLITAN UNIV, DEPT PHYS, TOKYO 158, JAPAN
[4] HIROSHIMA UNIV, DEPT PHYS, HIROSHIMA 730, JAPAN
[5] WAKAYAMA MED COLL, WAKAYAMA 64963, JAPAN
[6] TOKYO UNIV AGR & TECHNOL, FAC ENGN, KOGANEI, TOKYO 184, JAPAN
[7] OSAKA UNIV, DEPT PHYS, TOYONAKA, OSAKA 560, JAPAN
[8] KYOTO UNIV, DEPT PHYS, KYOTO 606, JAPAN
[9] TOHOKU GAKUIN UNIV, DEPT APPL PHYS, TAGAJO 985, JAPAN
[10] KOBE UNIV, GRAD SCH SCI & TECHNOL, KOBE 657, JAPAN
[11] KOBE UNIV, SCH ALLIED MED SCI, KOBE 65401, JAPAN
[12] UNIV TSUKUBA, INST PHYS, TSUKUBA 305, JAPAN
[13] MIYAZAKI UNIV, FAC ENGN, MIYAZAKI 88921, JAPAN
[14] KOBE UNIV, COLL LIBERAL ARTS, KOBE 657, JAPAN
[15] IBARAKI COLL TECHNOL, DEPT ELECTR & COMP ENGN, KATSUTA 312, JAPAN
[16] OKAYAMA UNIV, DEPT PHYS, OKAYAMA 700, JAPAN
[17] TSUKUBA INST SCI & TECHNOL, TSUCHIURA 300, JAPAN
[18] FUKUI UNIV, FAC ENGN, FUKUI 910, JAPAN