%0 Journal Article %A de Medeira, Cleber %T Global solvability for involutive systems on the torus %J Electronic Journal of Differential Equations %D 2013 %V 2013 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2013__2013__a41/ %G en %F EJDE_2013__2013__a41