%0 Journal Article %A Jakubík, Ján %T Covering graphs and subdirect decompositions of partially ordered sets %J Mathematica slovaca %D 1986 %P 151-162 %V 36 %N 2 %U http://geodesic.mathdoc.fr/item/MASLO_1986_36_2_a7/ %G en %F MASLO_1986_36_2_a7