TESTS OF MULTILAYERS BASED SOFT X-RAY MONOCHROMATORS FOR SYNCHROTRON RADIATION M. GRIONI, F . SCHAEFERS, J.B. GOEDKOOP, J.C. FUGGLE, J.L. WOOD and H. van BRUG J. Phys. Colloques, 48 C9 (1987) C9-91-C9-94 DOI: 10.1051/jphyscol:1987913