[1]Pearl[JournaloftheAmericanChemicalSociety,1955,vol.77,p.757]
[1]Kubiczek;Pohl;Smahel[MonatsheftefurChemie,1947,vol.77,p.54]
[1]Kubiczek;Pohl;Smahel[MonatsheftefurChemie,1947,vol.77,p.54]
[1]Barth;Wermuth[BulletindelaSocieteChimiquedeFrance,1977,vol.II,#9-10,p.956-958]