%0 Journal Article %A M. F. S. H. Al'-Kamali %A A. A. Alekseenko %A O. A. Titenkov %T Structure formation of SiO$_2$-xerogels containing copper compounds of different phase composition %J Problemy fiziki, matematiki i tehniki %D 2020 %P 7-12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PFMT_2020_3_a0/ %G ru %F PFMT_2020_3_a0