?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=G.T.&rft.au=Lai%2C+G.T.&rft.aulast=Lai&rft.date=2016&rft.volume=45&rft.issn=01266039&rft.title=Sains+Malaysiana&rft.atitle=Use+of+ultrasonic+velocity+travel+time+to+estimate+uniaxial+compressive+strength+of+granite+and+schist+in+Malaysia&rft.issue=2&rft.pages=185-193&rft.genre=article