zerrik, el hassan, S. Benhadid, and S. Rekkab. “Sensors and Boundary Gradient Observability of Hyperbolic Systems”. INTERNATIONAL JOURNAL OF MANAGEMENT & INFORMATION TECHNOLOGY 4, no. 3 (July 25, 2013): 295–316. Accessed November 26, 2024. https://rajpub.com/index.php/ijmit/article/view/768.