@article{DE_1977_13_1_a21,
     author = {T. V. Chekmarev},
     title = {A certain property of the solution of a system of {Euler--Poisson--Darboux} equations in a doubly connected domain},
     journal = {Differencialʹnye uravneni\^a},
     pages = {159--162},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_1_a21/}
}