%0 Journal Article %A Lagnese, John E. %T Boundary controllability in problems of transmission for a class of second order hyperbolic systems %J ESAIM: Control, Optimisation and Calculus of Variations %D 1997 %P 343-357 %V 2 %I EDP-Sciences %U http://archive.numdam.org/item/COCV_1997__2__343_0/ %G en %F COCV_1997__2__343_0