  We apply the Equivalent Photon Approximation to calculate cross sections for
the simultaneous excitation of two heavy ions in relativistic collisions. We
study especially the excitation of two nuclei to a 1- - state and show that the
equations are symmetric with respect to both ions. We also examine the limit in
which the excitation energy of one of the nuclei goes to zero, which gives the
elastic case. Finally a few remarks about the limits of this approach are made.
