@article{RM_1960_15_5_a9,
     author = {G. P. Samosyuk},
     title = {A~special problem of {Goursat}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {15},
     number = {5},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1960_15_5_a9/}
}