@inproceedings{
    kups:99a,
    author = "Kupść, Anna",
    title = "Clitic Climbing in {P}olish Verb Clusters: an {HPSG} Approach",
    pages = "75--82",
    crossref = "kru:oeh:99:ed"
}
@proceedings{
    kru:oeh:99:ed,
    editor = "Kruijff, Geert-Jan M. and Oehrle, Richard T.",
    title = "Proceedings of {F}ormal {G}rammar 1999",
    booktitle = "Proceedings of {F}ormal {G}rammar 1999",
    address = "Utrecht",
    year = "1999"
}