Robert A. Kaindl, Stephan Lutgen, Michael Woerner, Thomas Elsaesser, Bernd Nottelmann, Vollrath Martin Axt, Tilmann Kuhn, Andreas Hase, Harald Künzel,
Ultrafast Dephasing of Coherent Intersubband Polarizations in a Quasi-Two-Dimensional Electron Plasma Physical Review Letters. ,vol. 80, pp. 3575- 3578 ,(1998) ,
10.1103/PHYSREVLETT.80.3575