@inproceedings(2000-tagging-and-chunking-with-bigrams,
  author = {Ferran Pla Santamaría and Antonio Molina Marco and Natividad Prieto Saez},
  title = {Tagging and Chunking with Bigrams},
  year = {2000},
  booktitle = {International Conference on Computational Linguistics (COLING)},
  address = {Saarbrücken, Alemania},
  pages = {614-620}
)