Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1964__105_1_a4, author = {{\CYRA}.{\CYRS}. {\CYRB}{\cyrl}{\cyra}{\cyrg}{\cyro}{\cyrv}{\cyre}{\cyrshch}{\cyre}{\cyrn}{\cyrs}{\cyrk}{\cyri}{\cyrishrt}}, title = {{\CYRO} {\cyrh}{\cyra}{\cyrr}{\cyra}{\cyrk}{\cyrt}{\cyre}{\cyrr}{\cyri}{\cyrs}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyre} {\cyrd}{\cyrl}{\cyrya} {\cyru}{\cyrl}{\cyrsftsn}{\cyrt}{\cyrr}{\cyra}{\cyrg}{\cyri}{\cyrp}{\cyre}{\cyrr}{\cyrb}{\cyro}{\cyrl}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya}}, journal = {Matemati\v{c}eskij sbornik}, pages = {137--168}, publisher = {mathdoc}, volume = {105}, number = {1}, year = {1964}, zbl = {0117.31302}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1964__105_1_a4/} }
А.С. Благовещенский. О характеристической задаче для ультрагиперболического уравнения. Matematičeskij sbornik, Tome 105 (1964) no. 1, pp. 137-168. http://geodesic.mathdoc.fr/item/MS_1964__105_1_a4/