PT Journal AU Giessen, H Knorr, A Haas, S Koch, S Linden, S Kuhl, J Hetterich, M Gruen, M Klingshirn, C TI Self-induced transmission on a free exciton resonance in a semiconductor SO Phys. rev. let. 81 (1998) S. 4260. PY 1998 LA english ER