@article{IVM_1987_2_a3,
     author = {V. P. Burskiǐ},
     title = {Boundary value problems for a~second-order hyperbolic equation in a~disk},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {22--29},
     publisher = {mathdoc},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1987_2_a3/}
}