@inproceedings(2006-spoken-qa-based-on-a-passage-retrieval-engine,
  author = {Emilio Sanchis Arnal and Davide Buscaldi and Sergio Grau and Lluís Felip Hurtado Oliver and David Griol Barres},
  title = {Spoken QA based on a passage retrieval engine},
  year = {2006},
  booktitle = {IEEE/ACL Workshop on Spoken Language Technology (SLT)},
  address = {Palm Beach, Aruba},
  pages = {62-65}
)