?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Hallerstede%2C+Stefan&rft.aulast=Hallerstede&rft.aufirst=Stefan&rft.date=October+2011&rft.title=Refining+Nodes+and+Edges+of+State+Machines&rft.genre=proceeding