@article(2004-hidden-markov-models-for-understanding-in-a-dialogue-system,
  author = {Fernando Blat and Sergio Grau and Emilio Sanchis Arnal and María José Castro Bleda},
  title = {Hidden Markov Models for Understanding in a Dialogue System},
  year = {2004},
  journal = {Lecture Notes in Computer Science},
  volume = {3287},
  pages = {410-417}
)