%0 Journal Article %A Novák, Vítězslav %T On universal quasi-ordered sets %J Czechoslovak Mathematical Journal %D 1965 %P 589-595 %V 15 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1965.100696/ %R 10.21136/CMJ.1965.100696 %G en %F 10_21136_CMJ_1965_100696