[1]RecueildesTravauxChimiquesdesPays-Bas,1943,vol.62,p.57,60
[2]JustusLiebigsAnnalenderChemie,1903,vol.327,p.224
[1]JournaloftheAmericanChemicalSociety,1947,vol.69,p.2079,2083
[2]JustusLiebigsAnnalenderChemie,1903,vol.327,p.224
[1]JournaloftheAmericanChemicalSociety,1994,vol.116,p.589-596
[1]JournaloftheAmericanChemicalSociety,1947,vol.69,p.2079,2083
[1]Anschuetz;Beckerhoff[JustusLiebigsAnnalenderChemie,1903,vol.327,p.224]