Direct observation of quantum-path interferences in high order harmonic generation E. Cormier, A. Zaïr, M. Holler, F. Schapper, U. Keller, A. Wyatt, A. Monmayrant, I. Walmsley, T. Auguste and P. Salières Eur. Phys. J. Special Topics, 175 (2009) 191-194 Published online: 07 August 2009 DOI: 10.1140/epjst/e2009-01140-5