@article{DE_1974_10_1_a2,
     author = {A. B. Bazarbekov},
     title = {A certain problem for an equation of mixed type with two parallel lines of degeneracy},
     journal = {Differencialʹnye uravneni\^a},
     pages = {18--23},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_1_a2/}
}