?url_ver=Z39.88-2004&rft_id=10.3923%2Fjas.2011.1839.1844&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=K.S.&rft.au=Wei%2C+K.S.&rft.aulast=Wei&rft.volume=11&rft.atitle=Stress+intensity+factor+for+cracks+emanating+from+a+shaft&rft.title=Journal+of+Applied+Sciences&rft.date=2011&rft.issue=10&rft.pages=1839-1844&rft.issn=18125654&rft.genre=article