%0 Journal Article
%A N. K. Kundu
%T On approximate symmetric derivative
%J Colloquium Mathematicum
%D 1973
%P 275-285
%V 28
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-28-2-275-285/
%R 10.4064/cm-28-2-275-285
%G en
%F 10_4064_cm_28_2_275_285