@article{TRSPY_1934_5_a16,
     author = {S. Sobolev},
     title = {On analytic solutions of a system of partial differential equations with two independent variables},
     journal = {Informatics and Automation},
     pages = {265--282},
     publisher = {mathdoc},
     volume = {5},
     year = {1934},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1934_5_a16/}
}