Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1969__120_3_a1, author = {{\CYRM}.{\CYRI}. {\CYRF}{\cyrr}{\cyre}{\cyrishrt}{\cyrd}{\cyrl}{\cyri}{\cyrn}}, title = {{\CYRO} {\cyrs}{\cyru}{\cyrshch}{\cyre}{\cyrs}{\cyrt}{\cyrv}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyri}}, journal = {Matemati\v{c}eskij sbornik}, pages = {332--348}, publisher = {mathdoc}, volume = {120}, number = {3}, year = {1969}, zbl = {0174.15601}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1969__120_3_a1/} }
М.И. Фрейдлин. О существовании. Matematičeskij sbornik, Tome 120 (1969) no. 3, pp. 332-348. http://geodesic.mathdoc.fr/item/MS_1969__120_3_a1/