@bookIchev_Koren_Kosi_Sitar Sustar_Valentincic_2021, title=Cost of Debt for Private Firms Revisited: Voluntary Audits as a Reflection of Risk, author=Ichev, Riste and Koren, Jernej and Kosi, Urska and Sitar Sustar, Katarina and Valentincic, Aljosa, year=2021 

@articleValentincic_Novak_Kosi_2017, title=Accounting quality in private firms during the transition towards international standards, volume=14, DOI=10.1080/17449480.2017.1378821, number=3, journal=Accounting in Europe, author=Valentincic, Aljosa and Novak, Ales and Kosi, Urska, year=2017, pages=358–387 

@inproceedingsKosi_Koren_Valentincic_2013, title=Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?, author=Kosi, Urska and Koren, Jerney and Valentincic, Aljosa, year=2013