?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.entcs.2004.02.063&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Alberto&rft.aulast=Lluch-Lafuente&rft.au=Lluch-Lafuente%2C+Alberto&rft.issn=1571-0661&rft.pages=37-59&rft.volume=112&rft.date=2005&rft.atitle=Quantitative+mu-calculus+and+CTL+Based+on+Constraint+Semirings&rft.title=Electronic+Notes+in+Theoretical+Computer+Science&rft.genre=article