A PERMANENT MAGNET UNDULATOR FOR FREE ELECTRON LASER C. Bazin, J.M. Ortega, D.A.G. Deacon, C. Depautex et P. Elleaume J. Phys. Colloques, 45 C1 (1984) C1-317-C1-319 DOI: 10.1051/jphyscol:1984164
