@article{MS_1947__62_3_a0,
     author = {{\CYRV}. {\CYRT}{\cyrr}{\cyrzh}{\cyri}{\cyrc}{\cyri}{\cyrn}{\cyrs}{\cyrk}{\cyri}{\cyrishrt}},
     title = {Singular elliptic and hyperbolic partial differential equations},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {365--430},
     publisher = {mathdoc},
     volume = {62},
     number = {3},
     year = {1947},
     zbl = {0029.03903},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MS_1947__62_3_a0/}
}