@article{VSGTU_2015_19_4_a0,
     author = {A. A. Andreev and E. A. Maksimova},
     title = {Boundary value problems for matrix {Euler--Poisson--Darboux} equation with data on~a~characteristic},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {603--612},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2015_19_4_a0/}
}