Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1956__81_2_a6, author = {{\CYRI}.{\CYRG}. {\CYRP}{\cyre}{\cyrt}{\cyrr}{\cyro}{\cyrv}{\cyrs}{\cyrk}{\cyri}{\cyrishrt}}, title = {{\CYRN}{\cyre}{\cyrk}{\cyro}{\cyrt}{\cyro}{\cyrr}{\cyrery}{\cyre} {\cyrz}{\cyra}{\cyrm}{\cyre}{\cyrch}{\cyra}{\cyrn}{\cyri}{\cyrya} {\cyrk} {\cyrm}{\cyro}{\cyri}{\cyrm} {\cyrr}{\cyra}{\cyrb}{\cyro}{\cyrt}{\cyra}{\cyrm} {\cyro} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyre} {{\CYRK}{\cyro}{\cyrsh}{\cyri}}}, journal = {Matemati\v{c}eskij sbornik}, pages = {267--272}, publisher = {mathdoc}, volume = {81}, number = {2}, year = {1956}, zbl = {0070.08803}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1956__81_2_a6/} }
И.Г. Петровский. Некоторые замечания к моим работам о задаче Коши. Matematičeskij sbornik, Tome 81 (1956) no. 2, pp. 267-272. http://geodesic.mathdoc.fr/item/MS_1956__81_2_a6/