%0 Journal Article %A Chajda, Ivan %A Zelinka, Bohdan %T Tolerances and convexity %J Czechoslovak Mathematical Journal %D 1979 %P 584-587 %V 29 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1979.101640/ %R 10.21136/CMJ.1979.101640 %G en %F 10_21136_CMJ_1979_101640