Saito, Shinichi; Tanaka, Tadashi; Koizumi, Toru; Tsuboya, Norie; Itagaki, Hitoshi; Kawasaki, Taishi; Endo, Shota; Yamamoto, Yoshinori Journal of the American Chemical Society, 2000 , vol. 122, # 8 p. 1810 - 1811