?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Ani&rft.au=Apriani%2C+Ani&rft.aulast=Apriani&rft.atitle=Fuzzy+Soft+Set+for+Rock+Igneous+Clasification&rft.title=2018+International+Symposium+on+Advanced+Intelligent+Informatics+(SAIN)&rft.genre=article