Patrick Ulrich: Combined assurance — A potential integrated governance option for SMEs?. In: Corporate governance: Fundamental and challenging issues in scholarly research: Conference Proceedings, Virtus Interpress, 2021, pp. 101-105. (Corporate Governance: Fundamental and Challenging Issues in Scholarly Research, Online Conference, 25 November). DOI: https://doi.org/10.22495/cgfcisrp17