%0 Journal Article %A Nieminen, Juhani %T Tolerance relations on complete lattices %J Commentationes Mathematicae Universitatis Carolinae %D 1977 %P 639-645 %V 18 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1977__18_4_a1/ %G en %F CMUC_1977__18_4_a1