@inproceedings(2005-an-approach-to-dialogue-act-classification-based-on-utterances-and-dialogue-history,
  author = {R. Granell and F. Blat and María José Castro Bleda and S. Grau and David Griol Barres},
  title = {An approach to Dialogue Act Classification based on Utterances and Dialogue History},
  year = {2005},
  booktitle = {International Conference on Speech and Computer (SPECOM)},
  address = {Patras, Grecia},
  pages = {429-432}
)