Haraux, Alain, and Mohamed Ali Jendoubi. “A Liapunov Function Approach to the Stabilization of Second Order Coupled Systems”. North-Western European Journal of Mathematics, no. 2 (January 22, 2016): 129–150. Accessed October 18, 2024. https://nwejm.univ-lille.fr/index.php/nwejm/article/view/62.