[1]Aronovich,D.A.etal.[JournalofappliedchemistryoftheUSSR,1979,vol.52,p.900-902][ZhurnalPrikladnoiKhimii(Sankt-Peterburg,RussianFederation),1979,vol.52,p.939-942]
[1]JournalofappliedchemistryoftheUSSR,1971,vol.44,p.944-946 ZhurnalPrikladnoiKhimii(Sankt-Peterburg,RussianFederation),1971,vol.44,p.937-939