[1]Robinson,C.N.;Lewis,R.C.[JournalofHeterocyclicChemistry,1973,vol.10,p.395-397]
[1]Boehmer,Volker;Vogt,Walter;Chafaa,Salah;Meullemeestre,Jean;Schwing,Marie-Jose;Vierling,Francois[HelveticaChimicaActa,1993,vol.76,#1,p.139-149]
[1]Elumalai,Nagarajan;Berg,Angela;Natarajan,Kalaiselvi;Scharow,Andrej;Berg,Thorsten[AngewandteChemie-InternationalEdition,2015,vol.54,#16,p.4758-4763][Angew.Chem.,2015,vol.127,#16,p.4840-4845,6]
[2]Robinson,C.N.;Lewis,R.C.[JournalofHeterocyclicChemistry,1973,vol.10,p.395-397]
[1]Boehmer,Volker;Vogt,Walter;Chafaa,Salah;Meullemeestre,Jean;Schwing,Marie-Jose;Vierling,Francois[HelveticaChimicaActa,1993,vol.76,#1,p.139-149]