@article{IVM_1983_10_a3,
     author = {O. V. Zaitseva},
     title = {The well-posedness of a~model nonstrictly hyperbolic mixed problem},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {22--25},
     year = {1983},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_10_a3/}
}