?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Maria+Ulfah+Siregar%2C+&rft.aulast=Maria+Ulfah+Siregar&rft.aufirst=+&rft.date=27+March+2009&rft.atitle=DATA+PREPARATION+FOR+DATA+MINING+BASED+ON+NEURAL+NETWORK%3A+A+CASE+STUDY+ON+GERMAN+CREDIT+CLASSIFICATION+DATASET&rft.title=%2FJurnal%2FKaunia%2FVolume+4%2C+No.+2%2C+Oktober+2008%2F&rft.genre=article