History and Perspectives, (with G. Pavanelli, K. Dimitrova), in: The Experience of Exchange Rate Regimes in South-Eastern Europe in a historical and comparative perspective, Oesterreichische Nationalbank, 2007 Le Currency board comme institution: une comparaison des expériences bulgare, estonienne et lithuanienne, (with D. Koleva) (2007), in: Nouvelles Europes.
History and Perspectives, (mit G. Pavanelli, K. Dimitrova), in: The Experience of Exchange Rate Regimes in South-Eastern Europe in a historical and comparative perspective, Oesterreichische Nationalbank, 2007 Le Currency board comme institution : une comparaison des expériences bulgare, estonienne et lithuanienne, (mit D. Koleva) (2007), in: Nouvelles Europes.