[1]Patent:US2500045,1948,
[1]JournaloftheAmericanChemicalSociety,1957,vol.79,p.2919,2925
[1]JournaloftheAmericanChemicalSociety,1957,vol.79,p.2919,2925
[1]JournaloftheAmericanChemicalSociety,1957,vol.79,p.2919,2925
[1]JournaloftheAmericanChemicalSociety,1957,vol.79,p.2919,2925