TY - JOUR AU - Dániel Gerbner TI - The covering lemma and q-analogues of extremal set theory problems JO - Ars Mathematica Contemporanea PY - 2024 VL - 24 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.2677.b7f/ DO - 10.26493/1855-3974.2677.b7f LA - en ID - 10_26493_1855_3974_2677_b7f ER -