TY - JOUR AU - Kröner, Axel AU - Kunisch, Karl AU - Zidani, Hasnaa TI - Optimal feedback control for undamped wave equations by solving a HJB equation JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2015 SP - 442 EP - 464 VL - 21 IS - 2 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/cocv/2014033/ DO - 10.1051/cocv/2014033 LA - en ID - COCV_2015__21_2_442_0 ER -