?url_ver=Z39.88-2004&rft_id=10.4028%2Fwww.scientific.net%2FAMM.465-466.784&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M.A.M.&rft.aulast=Haniffa&rft.au=Haniffa%2C+M.A.M.&rft.pages=784-788&rft.atitle=Recent+developments+in+contra-flow+crawler+in+pipeline&rft.isbn=9783037859339&rft.volume=465-46&rft.issn=16609336&rft.date=2014&rft.title=Applied+Mechanics+and+Materials&rft.genre=article