Using Bernstein Polynomials Method for Solving High-order Nonlinear Volterra-Fredholm Integro Differential Equation. cbej [Internet]. 2022 Dec. 9 [cited 2024 Jun. 30];21(89):13-20. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/6673