Piotr, Staszkiewicz (2012): Model for reputational risk for subsidiaries of non-public group with reciprocal shareholding. Unpublished.
Staszkiewicz, Piotr W. (2010): Ryzyko struktury: Rys koncepcyjny. Published in: Research Papers of Wrocław University of Economics No. 183 (2011): pp. 378-384.