?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Mugisidi&rft.au=Mugisidi%2C+Dan&rft.aufirst=Dan&rft.degree=Doctoral&rft.date=27+December+2022&rft.inst=UNDIP&rft.title=hv