[1]Morimoto,Katsushi;Sato,Toshiaki;Yamamoto,Susumu;Takeuchi,Hiroshi[JournalofHeterocyclicChemistry,1997,vol.34,#2,p.537-540]
[2]Morimoto,Katsushi;Sato,Toshiaki;Yamamoto,Susumu;Takeuchi,Hiroshi[JournalofHeterocyclicChemistry,1997,vol.34,#2,p.537-540]
[3]Morimoto,Katsushi;Sato,Toshiaki;Yamamoto,Susumu;Takeuchi,Hiroshi[JournalofHeterocyclicChemistry,1997,vol.34,#2,p.537-540]