[1]JournaloftheAmericanChemicalSociety,1944,vol.66,p.656
[1]MonatsheftefurChemie,1956,vol.87,p.386,390
[1]JournalofMedicinalChemistry,1964,vol.7,p.284-288
[1]IndianJournalofChemistry,1965,vol.3,p.461-462
[1]IndianJournalofChemistry,1965,vol.3,p.461-462