@inproceedings(2001-clause-detection-using-hmm,
  author = {Antonio Molina Marco and Ferran Pla Santamaría},
  title = {Clause Detection using HMM},
  year = {2001},
  booktitle = {Conference on Computational Natural Language Learnings (CoNLL)},
  address = {Toulouse, Francia},
  pages = {70-72}
)