Ionization of barium through a coherent excitation of two bound intermediate states E. Luc-Koenig, M. Aymar, M. Millet, J.-M. Lecomte and A. Lyras Eur. Phys. J. D, 10 2 (2000) 205-223 Published online: 15 May 2000 DOI: 10.1007/s100530050542