@inbookWaldmüller_Förstner_Knorr_2004, place=Berlin, Heidelberg, title=Self-consistent Projection Operator Theory of Intersubband Absorbance in Semiconductor Quantum Wells, DOI=10.1007/978-3-662-08990-3, booktitle=Nonequilibrium Physics at Short Time Scales, publisher=Springer Berlin Heidelberg, author=Waldmüller, Ines and Förstner, Jens and Knorr, Andreas , editor=Morawetz, KlausEditor, year=2004