@article{DE_1982_18_7_a25,
     author = {V. F. Volkodavov and O. A. Repin},
     title = {A boundary value problem for the {Euler{\textendash}Darboux} equations with positive parameters},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1275--1277},
     year = {1982},
     volume = {18},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_7_a25/}
}