Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1964_6_a24, author = {L. Ya. Leifman}, title = {{\CYRP}{\cyri}{\cyrs}{\cyrsftsn}{\cyrm}{\cyra} {\cyrv} {\cyrr}{\cyre}{\cyrd}{\cyra}{\cyrk}{\cyrc}{\cyri}{\cyryu}. {I}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {188}, publisher = {mathdoc}, number = {6}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1964_6_a24/} }
L. Ya. Leifman. Письма в редакцию. I. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1964). http://geodesic.mathdoc.fr/item/IVM_1964_6_a24/