@inproceedings{SchwanebergKoeckemannSteineretal.2011, author = {Oliver Schwaneberg and Uwe K{\"o}ckemann and Holger Steiner and Norbert Jung}, title = {A Near-Infrared LED-based Material Classification Sensor System}, series = {Optical Sensors. Toronto, Canada, June 12-15, 2011}, isbn = {978-1-55752-913-8}, doi = {10.1364/SENSORS.2011.SMD4}, pages = {4}, year = {2011}, language = {en} }