%0 Journal Article %A Hans Volkmer %T Extending Peano derivatives: necessary and sufficient conditions %J Fundamenta Mathematicae %D 1999 %P 219-229 %V 159 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-159-3-219-229/ %R 10.4064/fm-159-3-219-229 %G en %F 10_4064_fm_159_3_219_229