@inproceedings{DeMori-Bechet:2003:DIALOGUE,
  author = {De Mori, Renato  and  B\'{e}chet, Frederic},
  title  = {Conceptual Language Models for Dialog Systems},
  booktitle = {Proceedings of the HLT-NAACL 2003 Workshop on Research Directions in Dialogue Processing},
  editor = {Alexander I. Rudnicky and Candace L. Sidner},
  url    = {http://www.aclweb.org/anthology/W03-0702.pdf},
  year   = 2003,
  pages  = {4--6}