MULTIPLE CHARACTERIZATION OF STRUCTURAL PERFECTION IN GaAs/AlAs SUPERLATTICE I. UMEBU, S. KOMIYA, T. NAKAMURA, S.-I. MUTOH and A. IIDA J. Phys. Colloques, 48 C5 (1987) C5-41-C5-44 DOI: 10.1051/jphyscol:1987506