@article{MM_1990_2_9_a7,
     author = {P. I. Naumkin and I. A. Shishmarev},
     title = {The {Cauchy} problem for the {Whitham} {equation.~II}},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {88--104},
     year = {1990},
     volume = {2},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1990_2_9_a7/}
}