@article{COCV_2021__27_1_A12_0,
     author = {Li, Tatsien and Rao, Bopeng},
     title = {Approximate boundary synchronization by groups for a coupled system of wave equations with coupled {Robin} boundary conditions},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     year = {2021},
     publisher = {EDP-Sciences},
     volume = {27},
     doi = {10.1051/cocv/2021006},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/cocv/2021006/}
}