@article{VMUMM_2021_5_a3,
     author = {N. V. Zaitseva},
     title = {Keldysh type problem with an integral condition for two-dimensional $B$-hyperbolic equation},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {31--39},
     year = {2021},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2021_5_a3/}
}