TY - JOUR AU - Iversen, Mette AU - Mazzoleni, Dario TI - Minimising convex combinations of low eigenvalues JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2014 SP - 442 EP - 459 VL - 20 IS - 2 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/cocv/2013070/ DO - 10.1051/cocv/2013070 LA - en ID - COCV_2014__20_2_442_0 ER -