In the research part the Supreme Court rulings were reviewed and examined how it concluded, in each case, if the debtor was entitled to repayment of what he overpaid.
Í rannsókninni voru rýndir dómar Hæstaréttar og athugað hvernig hann kemst að því hverju sinni, hvort skuldari eigi rétt á endurgreiðslu þess sem hann ofgreiddi.