?url_ver=Z39.88-2004&rft_id=2011&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Mohammad+Reza%2C+Sarshogh&rft.aulast=Mohammad+Reza&rft.aufirst=Sarshogh&rft.volume=46&rft.date=2011&rft.issn=1863-2122&rft.atitle=Specification+and+refinement+of+discrete+timing+properties+in+Event-B&rft.title=Automated+Verification+of+Critical+Systems+2011&rft.genre=article