@Article{ LamNov9, author = { Lamboley, Jimmy and Novruzi, Arian }, title = { Polygon as optimal shapes with convexity constraint }, journal = { SIAM Control and Optimization }, year = { 2009 }, volume = { 48 }, number = { 5 }, pages = { 3003-3025 }, URL = { http://cvgmt.sns.it/paper/3059/ }, note = { cvgmt preprint} }