@inproceedings{sanchez-martinez-etal-2004-cooperative,
    title = "Cooperative unsupervised training of the part-of-speech taggers in a bidirectional machine translation system",
    author = "S{\'a}nchez-Mart{\'i}nez, Felipe  and
      P{\'e}rez-Ortiz, Juan Antonio  and
      Forcada, Mikel L.",
    booktitle = "Proceedings of the 10th Conference on Theoretical and Methodological Issues in Machine Translation of Natural Languages",
    month = oct # " 4-6",
    year = "2004",
    address = "Baltimore, Maryland",
    url = "https://preview.aclanthology.org/fix-sig-urls/2004.tmi-1.15/"
}