[1]JournaloftheAmericanChemicalSociety,1958,vol.80,p.1181,1184
[1]JournaloftheChemicalSociety,1956,p.771,774
[1]JournaloftheChemicalSociety,1958,p.2024,2034
[1]JournaloftheChemicalSociety,1958,p.2024,2034
[1]JournaloftheAmericanChemicalSociety,1958,vol.80,p.1181,1184