1. Centre for Public Opinion Research (CBOS) 2011 The Dynamics of Support for the SLD 1997-2011 CBOS Warsaw http://www.cbos.pl
2. Politics without a Past
3. The Integrity of Corrupt States: Graft as an Informal State Institution;Darden;Politics and Society,2008
4. Dassonneville , R. Hooghe , M. 2011 Mapping Electoral Volatility in Europe: An Analysis of Trends in European Democracies since 1945 Paper presented at the first European Conference on Comparative Electoral Research Sofia, Bulgaria
5. Post-Accession Policy-Making in Bulgaria and Romania: Can Non-state Actors Use EU Rules to Promote Better Governance?;Dimitrova;JCMS,2014