CHARACTERISATION OF NANOMETER-SCALE EPITAXIAL STRUCTURES BY GRAZING-INCIDENCE X-RAY SCATTERING T.W. RYAN, C. LUCAS, P.D. HATTON and S. BATES J. Phys. Colloques, 48 C5 (1987) C5-109-C5-111 DOI: 10.1051/jphyscol:1987519