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@article{AM2_1990__39_2-3_137334, author = {Peter K\"ohler}, title = {On the error of compound quadrature formulas for r-convex functions.}, journal = {Aequationes mathematicae}, pages = {6--18}, publisher = {mathdoc}, volume = {39}, number = {2-3}, year = {1990}, zbl = {0698.41028}, url = {http://geodesic.mathdoc.fr/item/AM2_1990__39_2-3_137334/} }
Peter Köhler. On the error of compound quadrature formulas for r-convex functions.. Aequationes mathematicae, Tome 39 (1990) no. 2-3, pp. 6-18. http://geodesic.mathdoc.fr/item/AM2_1990__39_2-3_137334/