%0 Journal Article %A R. Weikard %T On rational and periodic solutions of stationary KdV equations %J Documenta mathematica %D 1999 %P 109-126 %V 4 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/55/ %R 10.4171/dm/55 %F 10_4171_dm_55