@article{DAN_1960_131_4_a22,
     author = {I. A. Urusovskii},
     title = {Diffraction of sound on a periodically uneven and inhomogeneous surface},
     journal = {Doklady Akademii Nauk},
     pages = {801--804},
     publisher = {mathdoc},
     volume = {131},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a22/}
}