%0 Journal Article %A Jean Van Schaftingen %T Estimates for $L^1$-vector fields under higher-order differential conditions %J Journal of the European Mathematical Society %D 2008 %P 867-882 %V 10 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4171/jems/133/ %R 10.4171/jems/133 %F JEMS_2008_10_4_a0