?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Leuschel%2C+Michael&rft.aulast=Leuschel&rft.aufirst=Michael&rft.date=2008&rft.title=Declarative+Programming+for+Verification%3A+Lessons+and+Outlook&rft.btitle=Proceedings+of+PPDP'2008&rft.genre=bookitem