[1]BulletindelaSocieteChimiquedeFrance,1925,vol.<4>37,p.1441
[1]JournaloftheChemicalSociety,1934,p.1705 JournaloftheSocietyofDyersandColourists,1938,vol.54,p.264,266
[1]JournaloftheChemicalSociety,1934,p.1705 JournaloftheSocietyofDyersandColourists,1938,vol.54,p.264,266
[1]BulletindelaSocieteChimiquedeFrance,1925,vol.<4>37,p.1441
[1]AustralianJournalofChemistry,1965,vol.18,p.1351-1364