@article{ZVMMF_1987_27_2_a6,
     author = {S. A. Gabov},
     title = {On the non-stationary theory of internal waves. {Existence} theorems},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {237--244},
     year = {1987},
     volume = {27},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1987_27_2_a6/}
}