%0 Journal Article
%A Abbott, H. L.
%T On Property of Families of Sets
%J Canadian mathematical bulletin
%D 1975
%P 133-135
%V 18
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-024-0/
%R 10.4153/CMB-1975-024-0
%F 10_4153_CMB_1975_024_0