@article{SM_1985_52_1_a5,
     author = {L. A. Kalyakin},
     title = {Long wave asymptotics of asolution of a~hyperbolic system of equations},
     journal = {Sbornik. Mathematics},
     pages = {91--114},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {1985},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1985_52_1_a5/}
}