Why do some oil exporters experience civil war but others do not?:investigating the conditional effects of oil Basedau, Matthias Richter, Thomas 2013 - Forschungsinformationssystem der UHH
International cooperation of authoritarian regimes:toward a conceptual framework Erdmann, Gero Bank, André Hoffmann, Bert Richter, Thomas 2013 - Forschungsinformationssystem der UHH