López Montes, Antonio and Zhang, Xu and Zuazua Iriondo, Enrique (2000) Null controllability of the heat equation as singular limit of the exact controllability of dissipative wave equations. Journal de Mathématiques Pures et Appliquées, 79 (8). pp. 741-808. ISSN 0021-7824
Zhang, Xu and Zuazua Iriondo, Enrique (2003) Unique Continuation for the Linearized Benjamin-Bona-Mahony Equation with Space-Dependent Potential. Mathematische Annalen, 326 (3). 543-582 . ISSN 0025-5831