%0 Journal Article %A De Pauw, Thierry %T Density estimate from below in relation to a conjecture of A. Zygmund on Lipschitz differentiation %J Journal de l’École polytechnique — Mathématiques %D 2022 %P 1473-1512 %V 9 %I Ecole polytechnique %U http://www.numdam.org/articles/10.5802/jep.211/ %R 10.5802/jep.211 %G en %F JEP_2022__9__1473_0