?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M.&rft.au=Asrul%2C+M.&rft.aulast=Asrul&rft.issue=2&rft.atitle=Surface+morphology+and+tensile+strength+of+natural+rubber+films+filled+with+sulphur+free+lignin+derived+from+rubberwood&rft.pages=118-133&rft.volume=16&rft.title=Journal+of+Rubber+Research&rft.issn=15111768&rft.date=2013&rft.genre=article