%0 Journal Article %A Ježek, J. %T Three-variable equations of posets %J Czechoslovak Mathematical Journal %D 2002 %P 811-816 %V 52 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2002__52_4_a12/ %G en %F CMJ_2002__52_4_a12