Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1967_173_1_a10, author = {R. A. Raitsin}, title = {Best mean approximation by polynomials of functions having a real singular point}, journal = {Doklady Akademii Nauk}, pages = {44--46}, publisher = {mathdoc}, volume = {173}, number = {1}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1967_173_1_a10/} }
R. A. Raitsin. Best mean approximation by polynomials of functions having a real singular point. Doklady Akademii Nauk, Tome 173 (1967) no. 1, pp. 44-46. http://geodesic.mathdoc.fr/item/DAN_1967_173_1_a10/