%0 Journal Article
%A Carl L. DeVito
%T On Pták's Generalization of the Open-Mapping and Closed-Graph Theorems.
%J Mathematische Zeitschrift
%D 1988
%P 399-406
%V 199
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1988__199_1_173975/
%F MZ_1988__199_1_173975