Więcek, Agata, Katarzyna Mroczek, and Piotr Trąpczyński. 2013. “Corruption in Europe in the Years 2001–2011. Multidimensional Comparative Analysis”. Acta Universitatis Nicolai Copernici Ekonomia 44 (1):129-44. https://doi.org/10.12775/AUNC_EKON.2013.010.