Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1978_24_3_a5, author = {S. A. Pichugov}, title = {Approximation of continuous functions on a~segment by linear methods}, journal = {Matemati\v{c}eskie zametki}, pages = {343--348}, publisher = {mathdoc}, volume = {24}, number = {3}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1978_24_3_a5/} }
S. A. Pichugov. Approximation of continuous functions on a~segment by linear methods. Matematičeskie zametki, Tome 24 (1978) no. 3, pp. 343-348. http://geodesic.mathdoc.fr/item/MZM_1978_24_3_a5/