?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Cao%2C+Thinh&rft.aulast=Cao&rft.aufirst=Thinh&rft.date=2018&rft.atitle=Parallel+Computation+of+Rough+Set+Approximations+in+Information+Systems+with+Missing+Decision+Data&rft.title=Computers&rft.genre=article