HIGH QUALITY SELECTIVE CONTACTS TO n-i-p-i DOPING SUPERLATTICES G. HASNAIN, C.J. CHANG-HASNAIN, G.H. DÖHLER, N.M. JOHNSON, D. MARS, J.N. MILLER et J. WHINNERY J. Phys. Colloques, 48 C5 (1987) C5-605-C5-609 DOI: 10.1051/jphyscol:19875130