@article{RM_1981_36_5_a21,
     author = {S. E. Pastukhova},
     title = {On~the~well-posedness of a~mixed boundary-value problem for a~hyperbolic equation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {171--172},
     publisher = {mathdoc},
     volume = {36},
     number = {5},
     year = {1981},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1981_36_5_a21/}
}