  In this paper we used the Fredholm method in Schroedinger's integral equation
in the investigation of the scattering effect near the center of it between a
stationary quantum wave function and an electrostatic potential. Two potentials
are studied one Coulombian and the other Podolsky. The result shows the
importance of the proposal of Podolsky to regularize the effect near the
scattering center in the quantum wave function. Being that the coulombian
potential presents with strong variation in the amplitude of the wave after the
scattering. In the case of Podolsky's potential, this is corrected by adopting
a constant that removes this strong variation.
