?url_ver=Z39.88-2004&rft_id=10.1145%2F1592434.1592436&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Woodcock%2C+Jim&rft.aulast=Woodcock&rft.aufirst=Jim&rft.issue=4&rft.volume=41&rft.date=2009&rft.atitle=Formal+Methods%3A+Practice+and+Experience&rft.title=ACM+Computing+Surveys&rft.pages=1-36&rft.genre=article