[1]Cowan;Vogel[JournaloftheChemicalSociety,1940,p.1529]
[2]Copeetal.[JournaloftheAmericanChemicalSociety,1941,vol.63,p.3455]
[1]CurrentPatentAssignee:Merck,E.-US2802827,1954,AAbe;Matsui[YakugakuZasshi/JournalofthePharmaceuticalSocietyofJapan,1955,vol.75,p.896][Chem.Abstr.,1956,p.4980]
[1]Gagnonetal.[CanadianJournalofResearch,SectionB:ChemicalSciences,1950,vol.28,p.207,210]
[1]Abeetal.[YakugakuZasshi/JournalofthePharmaceuticalSocietyofJapan,1955,vol.75,p.891][Chem.Abstr.,1956,p.4979]
[1]Alexander;Cope[JournaloftheAmericanChemicalSociety,1944,vol.66,p.887]