?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Dang%2C+Tran+Thai&rft.aulast=Dang&rft.aufirst=Tran+Thai&rft.date=9+October+2014&rft.title=Automatically+Learning+Patterns+in+Subjectivity+Classification+for+Vietnamese&rft.genre=proceeding