%0 Journal Article
%A Henderson, David W.
%T Open subsets of Hilbert space
%J Compositio Mathematica
%D 1969
%P 312-318
%V 21
%N 3
%I Wolters-Noordhoff Publishing
%U http://archive.numdam.org/item/CM_1969__21_3_312_0/
%G en
%F CM_1969__21_3_312_0