%0 Journal Article
%A J. Ravetz
%T Derivate planes of continuous functions of two real variables
%J Fundamenta Mathematicae
%D 1957
%P 103-114
%V 44
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-44-1-103-114/
%R 10.4064/fm-44-1-103-114
%G en
%F 10_4064_fm_44_1_103_114