@article{ZVMMF_1990_30_10_a4,
     author = {V. N. Bogaevskii},
     title = {The {Korteweg{\textendash}de} {Vries,} {Kadomtsev{\textendash}Petviashvili} and {Boussinesq} equations. {Modulation} theory},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1487--1501},
     year = {1990},
     volume = {30},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_10_a4/}
}