%0 Journal Article %A Li, Tatsien %A Rao, Bopeng %T Approximate boundary synchronization by groups for a coupled system of wave equations with coupled Robin boundary conditions %J ESAIM: Control, Optimisation and Calculus of Variations %D 2021 %V 27 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/cocv/2021006/ %R 10.1051/cocv/2021006 %G en %F COCV_2021__27_1_A12_0