%0 Journal Article %A Lieberman, Gary M. %T Nonuniqueness for some linear oblique derivative problems for elliptic equations %J Commentationes Mathematicae Universitatis Carolinae %D 1999 %P 477-481 %V 40 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1999__40_3_a6/ %G en %F CMUC_1999__40_3_a6