Elastic scattering of neutrons, protons and antiprotons from complex nuclei is microscopically analysed with Bru¨ckner’s reaction matrix as effective interaction. This interaction is generated with the Paris (NN) and (NN¯) potentials as fundamental input and it houses medium effects such as density and energy dependencies. Here we address ourselves to energies between 25 and 100 MeV and discuss the relevant aspects for the three different projectiles. Properties of the effective interaction play thereby a central role.