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@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/} }
Yu. M. Krikunov. The Tricomi problem for the elliptic-hyperbolic Euler--Poisson--Darboux equation. Doklady Akademii Nauk, Tome 171 (1966) no. 6, pp. 1275-1278. http://geodesic.mathdoc.fr/item/DAN_1966_171_6_a8/