@article{DAN_1973_212_3_a2,
     author = {V. N. Vragov},
     title = {The {Cauchy} problem for certain parabolic-hyperbolic equations},
     journal = {Doklady Akademii Nauk},
     pages = {536--539},
     publisher = {mathdoc},
     volume = {212},
     number = {3},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_3_a2/}
}