%0 Journal Article
%A V. PTAK
%T Some Metric Aspects of the Open Mapping and Closed Graph Theorems.
%J Mathematische Annalen
%D 1966
%P 95-104
%V 163
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1966__163_161355/
%F MAN_1966__163_161355