[1]JournaloftheChemicalSociety,1954,p.3916,3918
[2]JournaloftheChemicalSociety,1954,p.3916,3918
[3],1955,vol.40,p.49,56
[4]JournaloftheChemicalSociety,1958,p.1,6
[5]ChemistryofHeterocyclicCompounds,1981,vol.17,p.364-366
[6]ChemicalCommunications,2007,p.2121-2123
[7]Patent:US2004/63733,2004,A1
[8]ChemicalCommunications,2008,p.3007-3009
[9]AngewandteChemie-InternationalEdition,2019,vol.58,p.13039-13043 Angew.Chem.,2019,vol.131,p.13173-13177,5
[1]Patent:US2003/162777,2003,A1