@article{CRMATH_2022__360_G6_729_0, author = {Tatsien Li and Bopeng Rao}, title = {Uniqueness theorem for a coupled system of wave equations with incomplete internal observation and application to approximate controllability}, journal = {Comptes Rendus. Math\'ematique}, pages = {729--737}, publisher = {Acad\'emie des sciences, Paris}, volume = {360}, year = {2022}, doi = {10.5802/crmath.341}, zbl = {07547271}, language = {en}, }