@article{KUKZ_1980_17_17_a13,
     author = {I. E. Pleshchinskaya},
     title = {A problem of {Tricomi} type for a mixed type system of equations of second kind},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {124--132},
     publisher = {mathdoc},
     volume = {17},
     number = {17},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1980_17_17_a13/}
}