%0 Journal Article
%A N. K. Kundu
%A S. N. Mukhopadhyay
%T Symmetric derivative of nowhere monotone functions, I
%J Annales Polonici Mathematici
%D 1970
%P 247-253
%V 23
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-23-3-247-253/
%R 10.4064/ap-23-3-247-253
%G en
%F 10_4064_ap_23_3_247_253