%0 Journal Article %A Kočvara, Michal %A Zowe, Jochem %T Free material optimization %J Documenta mathematica %D 1998 %P 707-716 %V ICM Berlin 1998, Vol. III %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_1998__S9__a10/ %G en %F DOCMA_1998__S9__a10