%0 Journal Article
%A Jussi Ketonen
%T Some combinatorial properties of ultrafilters
%J Fundamenta Mathematicae
%D 1980
%P 225-235
%V 107
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-107-3-225-235/
%R 10.4064/fm-107-3-225-235
%G en
%F 10_4064_fm_107_3_225_235