Akai, Shuji; Tsujino, Toshiaki; Fukuda, Nobuhisa; Iio, Kiyosei; Takeda, Yoshifumi; Kawaguchi, Ken-Ichi; Naka, Tadaatsu; Higuchi, Kazuhiro; Akiyama, Emi; Fujioka, Hiromichi; Kita, Yasuyuki Chemistry - A European Journal, 2005, vol. 11, # 21 p. 6286 - 6297 doi: 10.1002/chem.200500443