%0 Journal Article %A Müller, Stefan %A Šverák, Vladimir %T Unexpected solutions of first and second order partial differential equations %J Documenta mathematica %D 1998 %P 691-702 %V ICM Berlin 1998, Vol. II %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_1998__S8__a16/ %G en %F DOCMA_1998__S8__a16