Photon-exchange processes at hadron colliders as a probe of the dynamics of diffraction V.A. Khoze, A.D. Martin and M.G. Ryskin Eur. Phys. J. C, 24 3 (2002) 459-468 Published online: 22 May 2002 DOI: 10.1007/s10052-002-0964-4