@article(2008-ppies-protein-protein-interaction-information-extraction-system,
  author = {Roxana María Danger Mercaderes and Paolo Rosso and Ferran Pla Santamaría and Antonio Molina Marco},
  title = {PPIEs: Protein-Protein Interaction Information Extraction System},
  year = {2008},
  journal = {PROCESAMIENTO DEL LENGUAJE NATURAL},
  number = {40},
  pages = {137-143}
)