@article{COCV_2015__21_2_442_0,
     author = {Kr\"oner, Axel and Kunisch, Karl and Zidani, Hasnaa},
     title = {Optimal feedback control for undamped wave equations by solving a {HJB} equation},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {442--464},
     publisher = {EDP-Sciences},
     volume = {21},
     number = {2},
     year = {2015},
     doi = {10.1051/cocv/2014033},
     zbl = {1318.49069},
     mrnumber = {3348407},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2014033/}
}