Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1960_6_a7, author = {A. A. Gonchar}, title = {Best approximations of measurable functions by rational functions and polynomials}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {74--81}, publisher = {mathdoc}, number = {6}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1960_6_a7/} }
A. A. Gonchar. Best approximations of measurable functions by rational functions and polynomials. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1960), pp. 74-81. http://geodesic.mathdoc.fr/item/IVM_1960_6_a7/