%0 Journal Article %A Ginsburg, John %T On the Number of Maximal Elements in a Partially Ordered Set %J Canadian mathematical bulletin %D 1987 %P 351-357 %V 30 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1987-050-6/ %R 10.4153/CMB-1987-050-6 %F 10_4153_CMB_1987_050_6