Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1969_1_a15, author = {S. A. Agahanov and G. I. Natanson}, title = {Letter to the editors}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {109--110}, publisher = {mathdoc}, number = {1}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1969_1_a15/} }
S. A. Agahanov; G. I. Natanson. Letter to the editors. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1969), pp. 109-110. http://geodesic.mathdoc.fr/item/IVM_1969_1_a15/