Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1962_6_a19, author = {I. I. \`Eterman}, title = {Approximation of functions by asymptotic polynomials}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {162--171}, publisher = {mathdoc}, number = {6}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1962_6_a19/} }
I. I. Èterman. Approximation of functions by asymptotic polynomials. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1962), pp. 162-171. http://geodesic.mathdoc.fr/item/IVM_1962_6_a19/