?url_ver=Z39.88-2004&rft_id=10.1007%2F3-540-46000-4_9&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Bettini%2C+Lorenzo&rft.aulast=Bettini&rft.aufirst=Lorenzo&rft.isbn=3-540-43410-0&rft.btitle=Coordination+Models+and+Languages+(COORDINATION+2002)&rft.title=Formalizing+Properties+of+Mobile+Agent+Systems&rft.date=2002&rft.genre=bookitem