%0 Journal Article %A O. A. Godin %T Reciprocity relations for waves in a compressible fluid %J Doklady Akademii Nauk %D 1987 %P 322-325 %V 293 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_293_2_a13/ %G ru %F DAN_1987_293_2_a13