Irie, Ryo; Tanoue, Akihiro; Urakawa, Suguru; Imahori, Tatsushi; Igawa, Kazunobu; Matsumoto, Taisuke; Tomooka, Katsuhiko; Kikuta, Shinsuke; Uchida, Tatsuya; Katsuki, Tsutomu Chemistry Letters, 2011 , vol. 40, # 12 p. 1343 - 1345