%0 Journal Article %A Janowitz, M. F. %T Tolerances, interval orders, and semiorders %J Czechoslovak Mathematical Journal %D 1994 %P 21-38 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1994.128450/ %R 10.21136/CMJ.1994.128450 %G en %F 10_21136_CMJ_1994_128450