@article{COCV_2018__24_4_1675_0,
     author = {Li, Tatsien and Rao, Bopeng},
     title = {On the approximate boundary synchronization for a coupled system of wave equations: direct and indirect controls},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {1675--1704},
     publisher = {EDP-Sciences},
     volume = {24},
     number = {4},
     year = {2018},
     doi = {10.1051/cocv/2017043},
     mrnumber = {3922429},
     zbl = {1415.93022},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2017043/}
}