%0 Journal Article %A V. M. Astapenko %T Reflection of sound by a corrugated impedance surface %J Doklady Akademii Nauk %D 1970 %P 1296-1299 %V 195 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_195_6_a11/ %G ru %F DAN_1970_195_6_a11