Tsetimi, J., and 2Ebimene J. Mamadu. “On the Existence and Uniqueness of Solution for the Fractional Fredholm Integro-Differential Equation through the Fractional Variational Orthogonal Collocation Method With Mamadu-Njoseh Orthogonal Basis Functions”. European Journal of Applied Sciences, vol. 9, no. 6, Dec. 2021, pp. 535-42, doi:10.14738/aivp.96.11412.