First experimental programs with the free electron laser G. Margaritondo, C. Coluzza, J.-L. Staehli, E. Tuncel, J.T. McKinley, R.G. Albridge, A.V. Barnes, A. Ueda, X. Yang et N.H. Tolk J. Phys. IV France, 04 C9 (1994) C9-357-C9-364 DOI: 10.1051/jp4:1994960