%0 Journal Article %A R. B. Alaverdyan %A Yu. S. Chilingaryan %T Wavefront reversal of sound on the surface of a liquid crystal %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 1985 %P 139-142 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_1985_3_a14/ %G ru %F UZERU_1985_3_a14