%0 Journal Article
%A A. van Rooij
%A W. Schikhof
%T On derivatives of functions defined on disconnected sets, I
%J Fundamenta Mathematicae
%D 1988
%P 83-92
%V 131
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-131-2-83-92/
%R 10.4064/fm-131-2-83-92
%G en
%F 10_4064_fm_131_2_83_92