@article{MS_1951__71_2_a3,
     author = {{\CYRS}.{\CYRP}. {\CYRF}{\cyri}{\cyrn}{\cyri}{\cyrk}{\cyro}{\cyrv}},
     title = {{\CYRS}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyrery} $W$},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {349--370},
     publisher = {mathdoc},
     volume = {71},
     number = {2},
     year = {1951},
     zbl = {0044.18003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MS_1951__71_2_a3/}
}