Rafeeq, A. S. “On the Parametrization of Nonlinear Impulsive Fractional Integro–Differential System With Non-Separated Integral Coupled Boundary Conditions”. Science Journal of University of Zakho, vol. 8, no. 4, Dec. 2020, pp. 160-8, doi:10.25271/sjuoz.2020.8.4.768.