Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MI_1971__6_2_189091, author = {{\CYRI}.{\CYRA}. {\CYRCH}{\cyri}{\cyrr}{\cyrk}{\cyro}{\cyrv}{\cyra}}, title = {{\CYRS}{\cyru}{\cyrshch}{\cyre}{\cyrs}{\cyrt}{\cyrv}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyre} {\cyro}{\cyrs}{\cyro}{\cyrb}{\cyro}{\cyrishrt} {\cyrt}{\cyrr}{\cyra}{\cyre}{\cyrk}{\cyrt}{\cyro}{\cyrr}{\cyri}{\cyri} {\cyrv} {\cyrp}{\cyrl}{\cyro}{\cyrs}{\cyrk}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrp}{\cyrr}{\cyri} {\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrch}{\cyri}{\cyri} {\cyrn}{\cyre}{\cyrb}{\cyrl}{\cyru}{\cyrzh}{\cyrd}{\cyra}{\cyryu}{\cyrshch}{\cyre}{\cyrishrt} {\cyrt}{\cyro}{\cyrch}{\cyrk}{\cyri}}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {153--156}, publisher = {mathdoc}, volume = {6}, number = {2}, year = {1971}, zbl = {0231.54044}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1971__6_2_189091/} }
И.А. Чиркова. Существование особой траектории в плоскости при наличии неблуждающей точки. Matematičeskie issledovaniâ, Tome 6 (1971) no. 2, pp. 153-156. http://geodesic.mathdoc.fr/item/MI_1971__6_2_189091/