%0 Journal Article %A R. Taberski %T Approximation of functions possessing derivatives of positive orders %J Annales Polonici Mathematici %D 1977 %P 13-23 %V 34 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-34-1-13-23/ %R 10.4064/ap-34-1-13-23 %G en %F 10_4064_ap_34_1_13_23