%0 Journal Article %A R. G. Matveeva %A V. V. Ilyukhin %A N. V. Belov %T Crystalline structure of mixed alkali tetragermanate %J Doklady Akademii Nauk %D 1973 %P 584-587 %V 213 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_213_3_a20/ %G ru %F DAN_1973_213_3_a20