%0 Journal Article
%A Andrzej Pelc
%T Ideals on the real line and Ulam's problem
%J Fundamenta Mathematicae
%D 1981
%P 165-170
%V 112
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-112-3-165-170/
%R 10.4064/fm-112-3-165-170
%G en
%F 10_4064_fm_112_3_165_170