%0 Journal Article %A I. M. Silvestrova %A Yu. V. Pisarevskii %A B. V. Mill' %A A. A. Kaminskii %T Acoustic and electromechanical properties of piezoelectric crystals with the structure of trigonal $\mathrm{Ca}$-gallogermanate %J Doklady Akademii Nauk %D 1985 %P 575-578 %V 282 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1985_282_3_a15/ %G ru %F DAN_1985_282_3_a15