Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1991_49_1_a19, author = {V. V. Dubinin}, title = {Optimal quadrature formulas for classes of functions with bounded mixed difference}, journal = {Matemati\v{c}eskie zametki}, pages = {149--151}, publisher = {mathdoc}, volume = {49}, number = {1}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1991_49_1_a19/} }
V. V. Dubinin. Optimal quadrature formulas for classes of functions with bounded mixed difference. Matematičeskie zametki, Tome 49 (1991) no. 1, pp. 149-151. http://geodesic.mathdoc.fr/item/MZM_1991_49_1_a19/