?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+Thi+Thu+Trang&rft.aulast=Nguyen&rft.aufirst=Thi+Thu+Trang&rft.date=November+2020&rft.title=Key+phrase+Generation+for+Vietnamese+Administrative+Documents%3A+A+Collaborative+Approach&rft.genre=proceeding