Ben Brahim, H., F.-Z. El Alaoui, and K. Zguaid. “Some Results Regarding Observability and Initial State Reconstruction for Time-Fractional Systems”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA), vol. 14, no. 2, Mar. 2024, pp. 99-112, doi:10.11121/ijocta.1468.