@article{DE_1979_15_2_a27,
     author = {R. N. Khubiev},
     title = {A boundary value problem for a parabolic-hyperbolic equation with an unknown line of type change},
     journal = {Differencialʹnye uravneni\^a},
     pages = {373--375},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_2_a27/}
}