[1]CurrentPatentAssignee:DuPontdeNemours&Co.-US2110499,1935,A
[1]Halletal.[JournaloftheChemicalSociety,1951,p.3341,3343]
[1]Paul;Tchelitcheff[BulletindelaSocieteChimiquedeFrance,1951,p.844]
[1]vanRisseghem[BulletindesSocietesChimiquesBelges,1914,vol.28,p.335][ChemischesZentralblatt,1922,vol.93,#III,p.341]
[1]Schostakowskiietal.[IzvestiyaAkademiiNaukSSSR,SeriyaKhimicheskaya,1956,p.378,379;engl.Ausg.S.365]