FAR INFRARED MAGNETO-ABSORPTION STUDY OF BARRIER IMPURITIES AND SCREENING IN GaAs/AlGaAs MULTIPLE QUANTUM WELLS E. GLASER, B. V. SHANABROOK, R. J. WAGNER, R. L. HAWKINS, W. J. MOORE et D. MUSSERJ. Phys. Colloques, 48 C5 (1987) C5-239-C5-242DOI: https://doi.org/10.1051/jphyscol:1987550