?url_ver=Z39.88-2004&rft_id=10.3923%2Fjas.2011.2006.2011&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Ariatedja%2C+J.B.&rft.aulast=Ariatedja&rft.aufirst=J.B.&rft.title=Journal+of+Applied+Sciences&rft.date=2011&rft.issue=11&rft.volume=11&rft.issn=18125654&rft.atitle=A+semi-elliptical+crack+modeling+and+fracture+constraint+on+failure+diagram&rft.pages=2006-2011&rft.genre=article