Voir la notice de l'article provenant de la source Math-Net.Ru
@article{KUKZ_1977_14_14_a9, author = {N. B. Il'inskii and A. G. Labutkin and R. B. Salimov}, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyra}}, journal = {Trudy seminara po kraevym zada\v{c}am}, pages = {90--97}, publisher = {mathdoc}, volume = {14}, number = {14}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KUKZ_1977_14_14_a9/} }
N. B. Il'inskii; A. G. Labutkin; R. B. Salimov. Задача. Trudy seminara po kraevym zadačam, Trudy Seminara po Kraevym Zadacham, Tome 14 (1977) no. 14, pp. 90-97. http://geodesic.mathdoc.fr/item/KUKZ_1977_14_14_a9/