?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Soebagyo%2C+Joko&rft.aufirst=Joko&rft.aulast=Soebagyo&rft.volume=23&rft.pages=842-852&rft.issue=2&rft.atitle=Android-Based+Mathematics+Learning+Media+Development+Research%3A+A+Bibliometric+Analysis+using+VosViewer&rft.title=Jurnal+Pendidikan+MIPA&rft.issn=2685-5488&rft.genre=article