TY - JOUR AU - B. Kawohl AU - J. Lang TI - Are Some Optimal Shape Problems Convex? JO - Journal of convex analysis PY - 1997 SP - 353 EP - 362 VL - 4 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCA_1997_4_2_a10/ ID - JCA_1997_4_2_a10 ER -