?url_ver=Z39.88-2004&rft_id=10.3923%2Fjas.2010.3319.3324&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=El-Harbawi&rft.au=El-Harbawi%2C+M.&rft.aufirst=M.&rft.date=2010&rft.title=Journal+of+Applied+Sciences&rft.pages=3319-3324&rft.atitle=Development+of+a+layer+of+protection+analysis+tool+to+determine+the+safety+integrity+level+in+process+industries&rft.volume=10&rft.issn=18125654&rft.issue=24&rft.genre=article