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@article{AM2_1975__12_136482, author = {Dietrich Braess}, title = {On the {Degree} of {Approximation} by {Spline} {Functions} with {Free} {Knots.}}, journal = {Aequationes mathematicae}, pages = {80--81}, publisher = {mathdoc}, volume = {12}, year = {1975}, zbl = {0328.41012}, url = {http://geodesic.mathdoc.fr/item/AM2_1975__12_136482/} }
Dietrich Braess. On the Degree of Approximation by Spline Functions with Free Knots.. Aequationes mathematicae, Tome 12 (1975), pp. 80-81. http://geodesic.mathdoc.fr/item/AM2_1975__12_136482/