%0 Journal Article
%A Wolfgang Dahmen
%T Trigonometrie Approximation with Exponential Error Orders. I. Construction of Asymptotically Optimal Processes; Generalized de la Vallée Poussin Sums.
%J Mathematische Annalen
%D 1977
%P 57-74
%V 230
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1977__230_163029/
%F MAN_1977__230_163029