[1]Gnedin,B.G.;Ivanov,S.N.;Shchukina,M.V.[JournalofOrganicChemistryUSSR(EnglishTranslation),1988,vol.24,p.731-737][ZhurnalOrganicheskoiKhimii,1988,vol.24,#4,p.810-817]
[1]Prinsen,A.J.;Cerfontain,H.[RecueildesTravauxChimiquesdesPays-Bas,1965,vol.84,p.24-30]
[1]Moschner[ChemischeBerichte,1901,vol.34,p.1259]