@article{KUKZ_1982_18_18_a16,
     author = {I. E. Pleshchinskaya},
     title = {The boundary value {problem~M} for a~system of equations of mixed type},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {138--144},
     publisher = {mathdoc},
     volume = {18},
     number = {18},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1982_18_18_a16/}
}