%0 Journal Article
%A Gongbao Li
%A Olli Martio
%T Local and global integrability of gradients in obstacle problems
%J Annales Fennici Mathematici
%D 1994
%P 25-34
%V 19
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AFM_1994_19_1_a2/
%G en
%F AFM_1994_19_1_a2