%0 Journal Article %A Švec, Alois %T On the Pick invariant %J Czechoslovak Mathematical Journal %D 1988 %P 493-497 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102246/ %R 10.21136/CMJ.1988.102246 %G en %F 10_21136_CMJ_1988_102246