Christoph Roedig, Gilles Doumy, Sang-Kil Son, C. I. Blaga, Anthony DiChiara, R. Santra, N. Berrah, C. Bosteadt, J. D. Bozek, Philip H. Bucksbaum, J. P. Cryan, L. Fang, S. Ghimire, J. M. Glownia, M. Hoener, E. P. Kanter, B. Krassig, M. Kuebel, M. Messerschmidt, G. Paulus, David A. Reis, Nina Rohringer, L. Young, Pierre Agostini, and Lou DiMauro, Multi Photon Physics at the LCLS in Frontiers in Optics / Laser Science XXVII (San Jose, California, 16-20 October, 2011) [BibTeX][abstract]doi:10.1364/LS.2011.LThE1