INTRINSIC VERSUS EXTRINSIC EFFECTS IN EXCITATION DYNAMICS IN GaAs/GaAlAs SUPERLATTICES D. BLOCK, B. BOULANGER, R. ROMESTAIN, B. DEVEAUD, B. LAMBERT and A. REGRENY J. Phys. Colloques, 48 C7 (1987) C7-537-C7-539 DOI: 10.1051/jphyscol:19877128