%0 Journal Article
%A A. Błaszczyk
%A U. Lorek
%T A classification of H-closed extensions
%J Colloquium Mathematicum
%D 1978
%P 29-33
%V 39
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-39-1-29-33/
%R 10.4064/cm-39-1-29-33
%G en
%F 10_4064_cm_39_1_29_33