?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=0717031005+%2C+HERDUMI&rft.aulast=0717031005+&rft.aufirst=HERDUMI&rft.date=3+Februari+2012&rft.atitle=PENDUGAAN+PARAMETER+MODEL+REGRESI+ZERO-INFLATED+POISSON+(ZIP)+DENGAN+METODE+MAXIMUM+LIKELIHOOD+ESTIMATION+UNTUK+MENGATASI+OVERDISPERSI+PADA+REGRESI+POISSON&rft.title=Digital+Library&rft.genre=article