[1]Libman;Slack[JournaloftheChemicalSociety,1956,p.2253,2257]vanderBurg[RecueildesTravauxChimiquesdesPays-Bas,1955,vol.74,p.257,260]McMillanetal.[JournaloftheAmericanPharmaceuticalAssociation(1912),1953,vol.42,p.457,463]
[1]vanderBurg[RecueildesTravauxChimiquesdesPays-Bas,1955,vol.74,p.257,260]
[1]Koenigetal.[ChemischeBerichte,1954,vol.87,p.825,834]
[1]Kennedy;Summers[JournalofHeterocyclicChemistry,1981,vol.18,#2,p.409-410]
[1]Gierczyk;Zalas[OrganicPreparationsandProceduresInternational,2005,vol.37,#3,p.213-222]