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@article{MM2_1984__48_155026, author = {Hans-Joachim Petzsche}, title = {Approximation of {Ultra-Differentiable} {Functions} by {Polynomials} and {Entire} {Functions.}}, journal = {Manuscripta mathematica}, pages = {227--250}, publisher = {mathdoc}, volume = {48}, year = {1984}, zbl = {0574.46018}, url = {http://geodesic.mathdoc.fr/item/MM2_1984__48_155026/} }
Hans-Joachim Petzsche. Approximation of Ultra-Differentiable Functions by Polynomials and Entire Functions.. Manuscripta mathematica, Tome 48 (1984), pp. 227-250. http://geodesic.mathdoc.fr/item/MM2_1984__48_155026/