%0 Journal Article
%A A. Arkhangel'skii
%T Open and almost open mappings of topological spaces
%J Doklady Akademii Nauk
%D 1962
%P 999-1002
%V 147
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_147_5_a0/
%G ru
%F DAN_1962_147_5_a0