@article{DAN_1958_122_6_a8,
     author = {L. N. Prokopenko},
     title = {Cauchy problem for {Sobolev's} type of equation},
     journal = {Doklady Akademii Nauk},
     pages = {990--993},
     publisher = {mathdoc},
     volume = {122},
     number = {6},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_122_6_a8/}
}