%0 Journal Article %A Dambrine, M. %A Sokołowski, J. %A Żochowski, A. %T On stability analysis in shape optimization: critical shapes for Neumann poblem %J Control and Cybernetics %D 2003 %P 503-528 %V 32 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CC_2003_32_3_a5/ %G en %F CC_2003_32_3_a5