MANO, Takaaki, Watanabe Katsuyuki, Tsukamoto Shiro, Imanaka Yasutaka, Takamasu Tadashi, Fujioka Hiroshi, Kido Giyu, Oshima Masaharu, Koguchi Nobuyuki, Takaaki Mano, Katsuyuki Watanabe, Shiro Tsukamoto, Yasutaka Imanaka, Tadashi Takamasu, Hiroshi Fujioka, Giyu Kido, Masaharu Oshima, Nobuyuki Koguchi.
Japanese Journal of Applied Physics 39 [Part 1, No. 7B] 4580-4583. 2000.