Johnson, Murugesan, et al. “Optimal Control Results for Impulsive Fractional Delay Integrodifferential Equations of Order 1 < R < 2 via Sectorial Operator”. Nonlinear Analysis: Modelling and Control, vol. 28, no. 3, Mar. 2023, pp. 468-90, https://doi.org/10.15388/namc.2023.28.31721.