?url_ver=Z39.88-2004&rft_id=10.1109%2FICIAS.2007.4658361&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Setiawan&rft.au=Setiawan%2C+N.A.&rft.aufirst=N.A.&rft.date=2007&rft.title=Missing+data+estimation+on+heart+disease+using+artificial+neural+network+and+rough+set+theory&rft.isbn=1424413559%3B+9781424413553&rft.genre=proceeding