%0 Journal Article %A Bucur, Dorin %A Buttazzo, Giuseppe %A Velichkov, Bozhidar %T Spectral optimization problems with internal constraint %J Annales de l'I.H.P. Analyse non linéaire %D 2013 %P 477-495 %V 30 %N 3 %I Elsevier %U http://archive.numdam.org/articles/10.1016/j.anihpc.2012.10.002/ %R 10.1016/j.anihpc.2012.10.002 %G en %F AIHPC_2013__30_3_477_0