author= {Macherey, Klaus and Bender, Oliver and Ney, Hermann},
title= {Multi-Level Error Handling for Tree Based Dialogue Course Management},
booktitle= {ISCA Tutorial and Research Workshop on Error Handling in Spoken Dialogue Systems},
year= 2003,
pages= {123-128},
address= {Chateau-d'Oex-Vaud, Switzerland},
month= aug,
booktitlelink= {http://www.speech.kth.se/error/},
pdf = {https://www-i6.informatik.rwth-aachen.de/publications/downloader.php?id=332&row=pdf}