@article(2004-improving-part-of-speech-tagging-using-lexicalized-hmms,
  author = {Ferran Pla Santamaría and Antonio Molina Marco},
  title = {Improving Part-of-Speech Tagging using Lexicalized HMMs},
  year = {2004},
  journal = {Natural Language Engineering},
  volume = {10},
  number = {2},
  pages = {167-189}
)