@article{MZM_1999_65_2_a14, author = {S. D. Troitskaya}, title = {On the first boundary value problem for a~hyperbolic equation in the plane}, journal = {Matemati\v{c}eskie zametki}, pages = {294--306}, publisher = {mathdoc}, volume = {65}, number = {2}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1999_65_2_a14/} }