%0 Journal Article %A Merryfield, Kent %A Stein, James D., Jr. %T Common fixed points of two isotone maps on a complete lattice %J Czechoslovak Mathematical Journal %D 1999 %P 849-866 %V 49 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_1999__49_4_a16/ %G en %F CMJ_1999__49_4_a16