@article{MZM_1989_45_1_a18,
     author = {I. A. Shishmarev},
     title = {On the smoothing of solutions of the {Cauchy} problem for a system of equations of surface waves},
     journal = {Matemati\v{c}eskie zametki},
     pages = {136--138},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_45_1_a18/}
}