?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+Ngoc+Tuan&rft.aulast=Nguyen&rft.aufirst=Ngoc+Tuan&rft.date=2013&rft.title=Text+Recognition+Method+for+Trademark+Images&rft.genre=proceeding