BibTeX field type: crossref

If you have several entries referring to the same proceedings, you can use crossref to specify fields common to several entries only once by defining crossref = {citationkey}. Where citationkey is the citation key of the cross-referenced entry.

@inproceedings{...,
    crossref = {CITATIONKEY},
}

@proceedings{CITATIONKEY,
    title = {...},
    ... = {...},
}