  We review a method to directly solve the Bethe-Salpeter equation in Minkowski
space, both for bound and scattering states. It is based on a proper treatment
of the many singularities which appear in the kernel and propagators. The
off-mass shell scattering amplitude for spinless particles interacting by a one
boson exchange was computed for the first time. Using our Minkowski space
solutions for the initial (bound) and final (scattering) states, we calculate
elastic and transition (bound to scattering state) electromagnetic form
factors. The conservation of the transition electromagnetic current J.q=0,
verified numerically, confirms the validity of our solutions.
