[1]JournaloftheAmericanChemicalSociety,1950,vol.72,p.1661,1667
[2]JournaloftheAmericanChemicalSociety,1950,vol.72,p.1661,1667
[1]JournaloftheAmericanChemicalSociety,1952,vol.74,p.1816,1818
[1]JournaloftheAmericanChemicalSociety,1951,vol.73,p.1400
[2]TetrahedronLetters,1979,p.2309-2312
[1]JournaloftheAmericanChemicalSociety,1950,vol.72,p.1661,1667
[1]JournaloftheAmericanChemicalSociety,1951,vol.73,p.1400