@InProceedings{nakata-EtAl:2002:ACL02-S2S,
  author    = {Takayuki Nakata  and  Takahiro Ikeda  and  Shinichi Ando  and  Akitoshi Okumura},
  title     = {Topic Detection Based on Dialogue History},
  booktitle = {Proceedings of the ACL-02 Workshop on Speech-to-Speech Translation: Algorithms and Systems},
  month     = {July},
  year      = {2002},
  publisher = {Association for Computational Linguistics},
  pages     = {9--14},
  url       = {http://www.aclweb.org/anthology/W02-0702},
  doi       = {10.3115/1118656.1118658}
}