@article{SEMR_2011_8_a2,
     author = {E. V. Makarevich},
     title = {Optimal system of subalgebras admitted by the gas dynamics equations in case of state equation with separated density},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {19--38},
     publisher = {mathdoc},
     volume = {8},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2011_8_a2/}
}