%0 Journal Article
%A F. M. Filipczak
%T On the derivative of a discontinuous function
%J Colloquium Mathematicum
%D 1964
%P 73-79
%V 13
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-13-1-73-79/
%R 10.4064/cm-13-1-73-79
%G en
%F 10_4064_cm_13_1_73_79