INTERMODULATED OPTOGALVANIC SPECTROSCOPY - A COMPARISON WITH OTHER HIGH RESOLUTION TECHNIQUES Ch. Belfrage, P. Grafström, S. Kröll et S. Svanberg J. Phys. Colloques, 44 C7 (1983) C7-169-C7-174 DOI: 10.1051/jphyscol:1983714