@inproceedings{
    prz:etal:11a,
    author = "Przepiórkowski, Adam and Bańko, Mirosław and Górski, Rafał L. and Lewandowska-Tomaszczyk, Barbara and Łaziński, Marek and Pęzik, Piotr",
    pdf = "http://nlp.ipipan.waw.pl/Bib/prz:etal:11a.pdf",
    title = "National {C}orpus of {P}olish",
    pages = "259--263",
    crossref = "vetu:11:ed"
}
@proceedings{
    vetu:11:ed,
    editor = "Vetulani, Zygmunt",
    title = "Proceedings of the 5th Language \& Technology Conference: Human Language Technologies as a Challenge for Computer Science and Linguistics",
    booktitle = "Proceedings of the 5th Language \& Technology Conference: Human Language Technologies as a Challenge for Computer Science and Linguistics",
    address = "Poznań, Poland",
    key = "LTC11",
    year = "2011"
}