Double-phonon giant dipole resonances in relativistic heavy ion collisions

J. Stroth, K. Boretzky-Grimm, E. Wajda, Th Blaich, Th W. Elze, H. Emling, H. Freiesleben, W. Henning, R. Holzmann, H. Klingler, R. Kulessa, J. V. Kratz, D. Lambrecht, Y. Leifels, E. Lubkiewicz, E. F. Moore, K. Stelzer, W. Walus, M. Zinser, E. Zude