%0 Journal Article
%A Žembery, Ivan
%T Uniqueness of improper operations
%J Czechoslovak Mathematical Journal
%D 1992
%P 19-23
%V 42
%N 1
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128320/
%R 10.21136/CMJ.1992.128320
%G en
%F 10_21136_CMJ_1992_128320