@article{MZM_1990_48_3_a22,
     author = {V. E. Shemarulin},
     title = {Contact symmetries and conservation laws of some equations in gas dynamics},
     journal = {Matemati\v{c}eskie zametki},
     pages = {154--156},
     publisher = {mathdoc},
     volume = {48},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_3_a22/}
}