%0 Journal Article %A S. V. Karapetyan %A A. N. Tselebrovskiy %A A. A. Durgaryan %T The influence of diffusion on the ultrasonic absorption in AT-quartz %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 1987 %P 81-87 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_1987_1_a12/ %G ru %F UZERU_1987_1_a12