@article{DAN_1958_123_5_a16,
     author = {A. F. Sidorov and N. N. Yanenko},
     title = {On unsteady two-dimensional flows of polytropic gas with straight line characteristics},
     journal = {Doklady Akademii Nauk},
     pages = {832--834},
     publisher = {mathdoc},
     volume = {123},
     number = {5},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_123_5_a16/}
}