The ENEA activity on applications with FELs, Doria, A., Gallerano G.P., Giovenale E., Messina G., Spassovsky I., Petralia A., Gupta L., d'Aquino Luigi, Ramundo A., Foglietti V., et al. , 2009 IEEE International Vacuum Electronics Conference, IVEC 2009, Rome, p.546-547, (2009)