?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Pham%2C+Thi+Thuong&rft.aulast=Pham&rft.aufirst=Thi+Thuong&rft.date=2016&rft.title=A+study+on+fitness+representation+in+Genetic+Programming&rft.genre=proceeding