%D 2011 %X A wide number of applications, like subsurface detection, medical imaging and non-destructive evaluation and testing, require the modeling of the full three-dimensional scattering in the complex scenarios. Integral equation method is one of the effective and powerful tools for solving such electro-magnetic problems. %I University of Trento %A Davide Franceschini %A Aria Abubakar %A T.M. Habashy %A Andrea Massa %L elediasc12494 %T Three-Dimensional Forward Solvers Based on Improved Formulations of the Extended Born Approximation