@article{DAN_1960_131_2_a15,
     author = {B. A. Shulyak},
     title = {Structure constants of the bottom that is being deformed by an undulatory flow},
     journal = {Doklady Akademii Nauk},
     pages = {275--278},
     year = {1960},
     volume = {131},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a15/}
}