@article{DAN_1966_171_6_a8,
     author = {Yu. M. Krikunov},
     title = {The {Tricomi} problem for the elliptic-hyperbolic {Euler--Poisson--Darboux} equation},
     journal = {Doklady Akademii Nauk},
     pages = {1275--1278},
     publisher = {mathdoc},
     volume = {171},
     number = {6},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_171_6_a8/}
}