“…(1) has a unique solution. Volterra integral equation arises in many physical applications, e.g., potential theory and Dirichlet problems, electrostatics, mathematical problems of radiative equilibrium, the particle transport problems of astrophysics and reactor theory and radiative heat transfer problems [1][2][3][4][5]. Several valid methods for solving Volterra integral equations have been developed in recent years, including power series method [6], Adomain's decomposition method [7], homotopy perturbation method [8,9], block by block method [10], expansion method [11] etc.…”