@article{DAN_1991_316_6_a21,
     author = {O. A. Godin},
     title = {On layered moving medium approximation in acoustics},
     journal = {Doklady Akademii Nauk},
     pages = {1378--1382},
     publisher = {mathdoc},
     volume = {316},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_6_a21/}
}