%0 Journal Article %A Tardif, Claude %T Counterexamples to Hedetniemi's conjecture and infinite Boolean lattices %J Commentationes Mathematicae Universitatis Carolinae %D 2022 %P 315-327 %V 63 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2023.003/ %R 10.14712/1213-7243.2023.003 %G en %F 10_14712_1213_7243_2023_003