@article{DAN_1957_112_5_a0,
     author = {G. A. Artemov},
     title = {The use of {Chaplygin's} method in solving the characteristic problem of {Cauchy} for a second order partial differential 
},
     journal = {Doklady Akademii Nauk},
     pages = {791--792},
     publisher = {mathdoc},
     volume = {112},
     number = {5},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_5_a0/}
}