%0 Journal Article %A Jean-Claude Guillot %A Benoit Grébert %T Gaps of one dimensional periodic AKNS systems. %J Forum mathematicum %D 1993 %P 459-504 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1993__5_3_141715/ %F FORUM_1993__5_3_141715