%0 Journal Article %A E. V. Sokolova %A A. P. Khomyakov %T Tridymite-like framework in the crystal structure of a new natural $\mathrm{Na}$-borosilicate %J Doklady Akademii Nauk %D 1991 %P 879-883 %V 319 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1991_319_4_a23/ %G ru %F DAN_1991_319_4_a23