%0 Journal Article %A James Lepowsky %A Robert Lee Wilson %T The structure of standard modules. II. The case A1(1), principal gradation. %J Inventiones mathematicae %D 1985 %P 417-442 %V 79 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1985__79_143204/ %F IM_1985__79_143204