%0 Journal Article
%A Austin, D.G.
%T A Lipschitzian characterization of approximately differentiable functions
%J Portugaliae mathematica
%D 1956
%P 19-29
%V 15
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1956__15_1_114764/
%G en
%F PORMA_1956__15_1_114764