Bialasiewicz, Luiza (2009): Europe as/at the border: Trieste and the meaning of Europe. Social and Cultural Geography, vol 10(3). pp. 319-33310.1080/14649360902756655
Big, Bad Visegrad (2016, Jan 30): The Economist: http://www.economist.com/news/europe/21689629-migration-crisis-has-given-unsettling-new-direction-old-alliance-big-bad-visegrad
De Lombaerde -Van Langenhove Indicators of regional integration, conceptual and methodological aspects, In: ed. De Lombaerde: Assesment and Measurement of Regional Integration, Routledge, Lomdonand New York, 9-42 Dobson, W. (1991): Economic Policy Coordination: Requiem or Prologue? Policy Analyses in International Economics, vol 30.
Drabek, Z. (1997) Regional and Sub-Regional Orban in Central and Eastern Europe: an Overview, in Regionalism and the Global Economy: The Case of Central and Eastern Europe. Fondad: the Hague, www.fondad.org
Energy Security of Visegrad region (n.d.) Visegrad.info.com, http://www.visegrad.info/energy-security-infrastrucutre/factsheet/energy-security-of-visegrad-region.html
Gavra, Gabór (2003): A kormanyzo FIDESZ es az EU csatlakozas: igenek es nemek. Magyar Narancs, 2003/4 http://magyarnarancs.hu/belpol/a_kormanyzo_fidesz_es_az_eu-csatlakozas_igenek_es_nemek-62225
Haas, E.B.: The Study of Regional Integration: Reflections on the Joy and Anguish of Pretheorizing, In: International Organization, Vol. 24, No. 4. 609-61010.1017/S0020818300017495
Hans-Ake Persson (1999): Viadrina to the Odera-Neisse Line: Historical evolution and regional cooperation, in Tagil, Sven, ed.,Regions in Central Europe, Hurst & Company, London.10.2307/j.ctt9qh114.12
Harris, Erika (2010): Slovakia since 1989, in Ramet, S, ed., Central and Southeast European Politics since 1989, Cambridge: Cambridge University Press. 182-20310.1017/CBO9780511803185.013
Kraev, Kamen (2016, 28 April): Warsaw Pivots to the Black Sea. New Eastern Europe: http://neweasterneurope.eu/articles-and-commentary/1976-warsaw-pivots-to-the-black-sea
Lee, Jeong Yeon - Kim, Doyeon (2013): Different Models for Regional Integration: Lessons from Total Factor Productivity in Europe, ABDI Working Papers, No. 452, https://think-asia.org/bitstream/handle/11540/1212/2013.12.13.wp452.different.models.regional.integration.pdf?sequence=1
Nic, Milan - Dostal, Vit (2016, 8 Jan): Central Europe’s Outlook on the EU and Foreign Policy. Carnegie Europe, http://carnegieeurope.eu/strategiceurope/?fa=62423
Nicolo, Fasolo - Pilloni, Manuela (n.d.): The Visegrad Group between Identity and Post-Socialist Transition - Relations with the EU and contemporary crisis: Portal on Central Eastern and Balkan Europe: http://www.pecob.eu/flex/cm/pages/ServeBLOB.php/L/EN/IDPagina/4943/UT/systemPrint
Okey, Robin (1992): Central Europe/ Eastern Europe: Behind the Definitions. Past and Present, the Cultural and Political Construction of Europe No. 137: 102-13310.1093/past/137.1.102
Pawlas, Iwona (2015): The Visegrad Countries and European Union Membership, Selected Issues, https://www.google.hu/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=Pawlas%2C+Iwona+(2015)%3A+The+Visegrad+Countries+and+European+Union+Membership
President of Republic of Poland (2016, 17 March): President starts official visit to Hungary, http://www.president.pl/en/news/art,122,president-starts-official-visit-to-hungary.html
Schmidt, Andrea (2011): The Eastern Borders of Europe - Symbolic, Historical and Cultural Aspects, in Tuka -Tarrosy, eds., Borderless Europe - Changes, Opportunities, Publikon:Pecs, 39-54
Schmidt, Andrea (2012) : Piast vagy Jagello? Lengyelorszag es Europa, in Bretter - Glied - Voros, eds., Az elkotelezett tanito, IDResearch/Publikon: Pecs, 119-127
Schmidt, Andrea (2013): The consequence of the EU enlargement, the new borders of the European Union in Milford, Susan - Tarrosy, Istvan, eds. Challenges for the European Union in the next decade, 61-76