%0 Journal Article %A Šeda, Valter %T Professor Michal Greguš sexagenarian %J Czechoslovak Mathematical Journal %D 1986 %P 673-679 %V 36 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1986.102126/ %R 10.21136/CMJ.1986.102126 %G en %F 10_21136_CMJ_1986_102126