@article{IVM_1960_3_a11,
     author = {A. Kh. Gelig},
     title = {Stability of the solutions of a~mixed problem for a~hyperbolic equation of second order},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {104--112},
     publisher = {mathdoc},
     number = {3},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1960_3_a11/}
}