An Efficient Numerical Method for Solving Volterra-Fredholm Integro-Differential Equations of Fractional Order by Using Shifted Jacobi-Spectral Collocation Method. Baghdad Sci.J [Internet]. 2018 Sep. 13 [cited 2024 Dec. 20];15(3):0344. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2483