%0 Journal Article
%A Jack Ceder
%T Differentiable roads for real functions
%J Fundamenta Mathematicae
%D 1969
%P 351-358
%V 65
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-65-3-351-358/
%R 10.4064/fm-65-3-351-358
%G en
%F 10_4064_fm_65_3_351_358