?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Lluch-Lafuente%2C+Alberto&rft.aulast=Lluch-Lafuente&rft.aufirst=Alberto&rft.title=Symmetry+reduction+and+heuristic+search+for+error+detection+in+model+checking&rft.date=August+2003&rft.genre=proceeding