TY - JOUR A1 - Grüninger, Markus A1 - Windt, Marco A1 - Benckiser, Eva A1 - Nunner, Tamara A1 - Schmidt, Kai P. A1 - Uhrig, Götz S. A1 - Kopp, Thilo T1 - Optical spectroscopy of low-dimensional quantum spin systems T2 - Advances in Solid State Physics Y1 - 2003 UR - https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/30757 VL - 43 SP - 95 EP - 112 ER -