%0 Journal Article %A Ginsburg, J. %A Rival, I. %A Sands, B. %T Antichains and Finite Sets that Meet all Maximal Chains %J Canadian journal of mathematics %D 1986 %P 619-632 %V 38 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1986-031-3/ %R 10.4153/CJM-1986-031-3 %F 10_4153_CJM_1986_031_3