Balasim Taha Abdilrzak and Mays Basim Nasih, “Solving high order of non-linear Volterra-fredholm Integro-differential equation by using bou-baker Polynomials approximation Method”, JWSM, vol. 16, no. 3, pp. 63–70, Sep. 2023, doi: 10.31185/jwsm.478.