Optimization of the wave front of high order harmonics J. Gautier, P. Zeitoun, C. Hauri, A.-S. Morlens, G. Rey, C. Valentin, E. Papalarazou, J.-P. Goddet, S. Sebban, F. Burgy et al. (8 more) Eur. Phys. J. D, 48 3 (2008) 459-463 Published online: 18 June 2008 DOI: 10.1140/epjd/e2008-00123-2