@article{01130741, title = {Are some optimal shape problems convex?}, journal = {Journal of Convex Analysis}, volume = {4}, year = {1997}, pages = {353-361}, zbl = {0897.49002}, language = {en}, url = {http://dml.mathdoc.fr/item/01130741} }
Kawohl, Bernd; Lang, Jan. Are some optimal shape problems convex?. Journal of Convex Analysis, Tome 4 (1997) pp. 353-361. http://gdmltest.u-ga.fr/item/01130741/