1. Ambroziak AA (2005) State aid as an instrument for reinforcing competitiveness of polish undertakings. Necessity for retargeting of the granted aid? Project: changes in industrial competitiveness as a factor of integration: identifying challenges of the enlarged single European market, research. CASE - Center for Social and Economic Research, funded by the 5th Framework Programme of the European Union, Brussels
2. Ambroziak AA (2006) Wpływ nowych wytycznych w sprawie krajowej pomocy regionalnej na funkcjonowanie specjalnych stref ekonomicznych w Polsce [The influence of the new guidelines concerning national aid to regions on the functioning of special economic zones in Poland] Wspólnoty Europejskie, No. 3(172)/2006, pp 18–28
3. Ambroziak AA (2009) Krajowa pomoc regionalna w specjalnych strefach ekonomicznych w Polsce [National regional aid in special economic zones in Poland]. Oficyna Wydawnicza SGH, Warszawa
4. Ambroziak AA (2011) Strategy for the re-launching the EU internal market in response to the economic crisis, 2008-2010, Yearbook of Polish European Studies, vol 14/2011. Centre for Europe, University of Warsaw, Warsaw, pp 27–54
5. Ambroziak AA (2013a) Koncepcja krajowej pomocy regionalnej w latach 2014-2020 [The Concept of Regional Aid Map in Member States of the EU for 2014-2020], Unia Europejska.pl, No. 3(220)/2013, pp 16–25