@article{ZVMMF_1990_30_5_a9,
     author = {Yu. D. Pletner},
     title = {Vibrations of a~flat disk at the interface between two stratified liquids},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {736--750},
     year = {1990},
     volume = {30},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_5_a9/}
}