%0 Journal Article %A Dániel Gerbner %T The covering lemma and q-analogues of extremal set theory problems %J Ars Mathematica Contemporanea %D 2024 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.2677.b7f/ %R 10.26493/1855-3974.2677.b7f %G en %F 10_26493_1855_3974_2677_b7f