[1]BioorganicandMedicinalChemistryLetters,2011,vol.21,p.3923-3926
[2]JournaloftheChemicalSociety,1937,p.479,482
[1]ChemischeBerichte,1899,vol.32,p.2793 GazzettaChimicaItaliana,1901,vol.31I,p.162
[1]MonatsheftefurChemie,1925,vol.46,p.155
[1]MonatsheftefurChemie,1911,vol.32,p.432
[1],1932,vol.6,p.96