?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Tran%2C+Cao+Quyen&rft.aulast=Tran&rft.aufirst=Cao+Quyen&rft.volume=31&rft.date=December+2015&rft.atitle=Nghi%C3%AAn+c%E1%BB%A9u+%C4%91i%E1%BB%81u+ch%E1%BA%BF+kh%C3%B4ng+gian+cho+k%C3%AAnh+n%C6%B0%E1%BB%9Bc+bi%E1%BB%83n+n%C3%B4ng+gi%C3%A0u+t%C3%A1n+x%E1%BA%A1+v%C3%A0+t%C3%A1n+x%E1%BA%A1+y%E1%BA%BFu&rft.title=Journal+of+Science+%26+Technology+-+Hanoi+University+of+Industry&rft.genre=article