@article{KUKZ_1977_14_14_a18,
     author = {I. E. Pleshchinskaya},
     title = {Solution of the {Tricomi} problem for a system of equations of mixed type in the case of unbounded domains},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {183--193},
     year = {1977},
     volume = {14},
     number = {14},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1977_14_14_a18/}
}