Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1975__140_4_a7, author = {{\CYRP}.{\CYRA}. {\CYRK}{\cyru}{\cyrch}{\cyrm}{\cyre}{\cyrn}{\cyrt} and {\CYRA}.{\CYRA}. {\CYRP}{\cyra}{\cyrn}{\cyrk}{\cyro}{\cyrv}}, title = {{\CYRP}{\cyri}{\cyrs}{\cyrsftsn}{\cyrm}{\cyro} {\cyrv} {\cyrr}{\cyre}{\cyrd}{\cyra}{\cyrk}{\cyrc}{\cyri}{\cyryu}:}, journal = {Matemati\v{c}eskij sbornik}, pages = {635--635}, publisher = {mathdoc}, volume = {140}, number = {4}, year = {1975}, zbl = {0314.55006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1975__140_4_a7/} }
П.А. Кучмент; А.А. Панков. Письмо в редакцию:. Matematičeskij sbornik, Tome 140 (1975) no. 4, p. 635. http://geodesic.mathdoc.fr/item/MS_1975__140_4_a7/