[1]JournalfurpraktischeChemie(Leipzig1954),1956,vol.<4>4,p.19,26
[1]v.Braun;Muench[ChemischeBerichte,1927,vol.60,p.353]
[1]Pharmazie,1980,vol.35,p.199-202
[1]Nishikawa,Shiro;Nishikimi,Yoshio;Maki,Shinji;Kumazawa,Zenzaburo;Kashimura,Naoki[JournalofAgriculturalandFoodChemistry,1995,vol.43,#4,p.1034-1038]
[1]Clarke[JournaloftheChemicalSociety,1913,vol.103,p.1699]