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@article{MS2_1959__7_165707, author = {G\"osta Wahde}, title = {An {Extremal} {Problem} {Related} to the {Theory} of {Quasi-Analytic} {Functions.}}, journal = {Mathematica Scandinavica}, pages = {126--132}, publisher = {mathdoc}, volume = {7}, year = {1959}, zbl = {0099.04503}, url = {http://geodesic.mathdoc.fr/item/MS2_1959__7_165707/} }
Gösta Wahde. An Extremal Problem Related to the Theory of Quasi-Analytic Functions.. Mathematica Scandinavica, Tome 7 (1959), pp. 126-132. http://geodesic.mathdoc.fr/item/MS2_1959__7_165707/