%0 Journal Article %A J. Chabrowski %T On the Neumann problem with $L^1$ data %J Colloquium Mathematicum %D 2007 %P 301-316 %V 107 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm107-2-10/ %R 10.4064/cm107-2-10 %G en %F 10_4064_cm107_2_10