[1]IndustrialandEngineeringChemistry,1954,vol.46,p.1711,1712
[1]JournaloftheChemicalSociety,1950,p.1146,1151
[1]Patent:US2783210,1953,
[2]Patent:US2690455,1952,
[1]ChemischeBerichte,1887,vol.20,p.1255
[1]JournaloftheAmericanChemicalSociety,1938,vol.60,p.1476,1478
[2]JustusLiebigsAnnalenderChemie,1903,vol.327,p.224
[3]JournaloftheAmericanChemicalSociety,1947,vol.69,p.2079,2083