@InProceedings{yamamoto-isogai-sagisaka:2001:ACL,
  author    = {Hirofumi Yamamoto  and  Shuntaro Isogai  and  Yoshinori Sagisaka},
  title     = {Multi-Class Composite N-gram Language Model for Spoken Language Processing Using Multiple Word Clusters},
  booktitle = {Proceedings of 39th Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {2001},
  address   = {Toulouse, France},
  publisher = {Association for Computational Linguistics},
  pages     = {531--538},
  url       = {http://www.aclweb.org/anthology/P01-1068},
  doi       = {10.3115/1073012.1073080}
}