%0 Journal Article %A O. A. Godin %T The wave equation for an acoustic field in a fluid with density %J Doklady Akademii Nauk %D 1984 %P 579-582 %V 276 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1984_276_3_a15/ %G ru %F DAN_1984_276_3_a15