%0 Journal Article
%A Władysław Wilczyński
%T Zygmunt Zahorski's works on the first derivative
%J Antiquitates Mathematicae
%D 2013
%P  247-252
%V 7
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/am.v7i0.583/
%R 10.14708/am.v7i0.583
%G pl
%F 10_14708_am_v7i0_583