@article{KUKZ_1987_23_23_a14,
     author = {Yu. M. Krikunov and N. M. Shagidullin},
     title = {A nonlocal problem for an equation of mixed type of the second kind},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {138--145},
     publisher = {mathdoc},
     volume = {23},
     number = {23},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1987_23_23_a14/}
}