%0 Journal Article %A Novák, Vítězslav %A Novotný, Miroslav %T Linear extensions of orderings %J Czechoslovak Mathematical Journal %D 2000 %P 853-864 %V 50 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2000__50_4_a12/ %G en %F CMJ_2000__50_4_a12