%0 Journal Article %A S. Mukhopadhyay %T On the approximate Peano derivatives %J Fundamenta Mathematicae %D 1975 %P 133-143 %V 88 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-88-2-133-143/ %R 10.4064/fm-88-2-133-143 %G en %F 10_4064_fm_88_2_133_143