Inuoe, Jun; Fukui, Kozo; Kubo, Takashi; Nakazawa, Shigeaki; Sato,Kazunobu; Shiomi, Daisuke; Morita, Yasushi; Yamamoto, Kagetoshi; Takui, Takeji; Nakasuji, Kazuhiro Journal of the American Chemical Society, 2001, vol. 123, # 50 p. 12702 - 12703 doi: 10.1021/ja016751y