[1]JournaloftheChemicalSociety,1953,p.386
[1]JournaloftheChemicalSociety,1953,p.386
[1]JournaloftheChemicalSociety,1953,p.386
[1]JournaloftheChemicalSociety,1953,p.386
[1]JournaloftheChemicalSociety,1953,p.386
[2]Heterocycles,1981,vol.16,p.1545-1553