%0 Journal Article %A Anna Zatorska-Goldstein %T Very weak solutions of nonlinear subelliptic equations %J Annales Fennici Mathematici %D 2005 %P 407-436 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_2005_30_2_a11/ %G en %F AFM_2005_30_2_a11