Fatma, A., I. Batiha, R. Imad, O. Takieddine, and A. Ouannas. “Solvability and Weak Controllability of Fractional Degenerate Singular Problem”. Journal of Robotics and Control (JRC), vol. 5, no. 2, Mar. 2024, pp. 542-50, doi:10.18196/jrc.v5i2.20474.