[1]Bruylants[BulletindesSocietesChimiquesBelges,1922,vol.31,p.176][ChemischesZentralblatt,1923,vol.94,#I,p.37]
[1]Leclercq;Bruylants[BulletindesSocietesChimiquesBelges,1949,vol.58,p.6,14]
[1]Couvreur;Bruylants[JournalofOrganicChemistry,1953,vol.18,p.501,502]
[1]Derick;Hess[JournaloftheAmericanChemicalSociety,1918,vol.40,p.546]
[1]Couvreur;Bruylants[JournalofOrganicChemistry,1953,vol.18,p.501,502]