Kogen, Hiroshi; Kiho, Toshihiro; Tago, Keiko; Miyamoto, Shuichi; Fujioka, Tomoyuki; Otsuka, Noriko; Suzuki-Konagai, Keiko; Ogita, Takeshi Journal of the American Chemical Society, 2000, vol. 122, # 8 p. 1842 - 1843 doi: 10.1021/ja992355s