%0 Journal Article %T The concentration of impurities in industrial forms of transparent vitreous silicas %A Gurkovskii, E. %A Khotimchenko, V. %A Tysovskaya, L. %J Glass and Ceramics %V 33 %N 5 %P 304-305 %@ 0361-7610 %D 2004-11-11 %I Kluwer Academic Publishers-Plenum Publishers %~ DeepDyve