@article{VSGU_2009_6_a9,
     author = {V. G. Makaryan and N. E. Molevich and D. P. Porfir'ev},
     title = {The classification of gas-dynamic structures described by the nonlinear acoustical equation of a~relaxing medium},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {92--104},
     publisher = {mathdoc},
     number = {6},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2009_6_a9/}
}