?url_ver=Z39.88-2004&rft_id=2809094&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Berend&rft.aufirst=G%C3%A1bor&rft.au=+Berend+G%C3%A1bor&rft.pages=73-95&rft.issue=1&rft.title=NATURAL+LANGUAGE+ENGINEERING&rft.volume=22&rft.issn=1351-3249&rft.date=2014&rft.atitle=Exploiting+extra-textual+and+linguistic+information+in+keyphrase+extraction&rft.genre=article