Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1976_226_1_a11, author = {M. I. Levin and Yu. M. Girshovich and V. K. Arro}, title = {Best quadrature formulas on sets of functions}, journal = {Doklady Akademii Nauk}, pages = {51--54}, publisher = {mathdoc}, volume = {226}, number = {1}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1976_226_1_a11/} }
M. I. Levin; Yu. M. Girshovich; V. K. Arro. Best quadrature formulas on sets of functions. Doklady Akademii Nauk, Tome 226 (1976) no. 1, pp. 51-54. http://geodesic.mathdoc.fr/item/DAN_1976_226_1_a11/