@article{MZM_1987_42_4_a4,
     author = {M. K. Balaev and S. Ya. Yakubov},
     title = {Well-posedness of a mixed problem for some classes of equations well-posed in the petrovskii sense},
     journal = {Matemati\v{c}eskie zametki},
     pages = {527--536},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1987_42_4_a4/}
}