. Marlier, D. Natali, R. Van Dam (eds.), P.I.E. Peter Lang, Brussels, pp. 143-161.
Decancq K., Goedemé T., Van den Bosch K., Vanhille J., 2013, The Evolution of Poverty in the EuropeanUnion: Concepts, Measurement and Data, ImPRovE Methodological Paper, no 13/01, Antwerp, pp. 2-4.
Domański Cz., Kupis-Fijałkowska A. (eds.), 2013, Multivariate Statistical Analysis Theory and Practice, Wydawnictwo Uniwersytetu Łódzkiego, Łódź.
Eurofound, 2010, Working poor in Europe, European Foundation for the Improvement of Living and Working
Specialization . Cambridge: MIT Press.
Doyle, E. & O'Leary, E. (1999). The Role of Structural Change in Labour Productivity Convergence among EuropeanUnion Countries: 1970-1990. Journal of Economic Studies , 26, 2, Glasgow.
Dunn, E. S. (1960). A Statistical and Analytical Technique for Regional Analysis. Papers and Proceedings of the Regional Science Association , 6.
Englander, S. & Gurney, A. (1994). Medium-term Determinants of OECD Productivity. OECD Economic Studies , 22
/09. · European Commission - “Press Release IP/11/269”, Brussels (8 March 2011). Available in: http://europa.eu/rapid/press-release_IP-11-269_en.htm?locale=en.
· Court of Justice of the EuropeanUnion, “Press Release No 17/11”, Luxembourg (8 March 2011). Available in: http://curia.europa.eu/jcms/upload/docs/application/pdf/201103/cp110017en.pdf.
· European Parliament and Council, Regulation (EU) 1257/2012 of the European Parliament and of the Council of the EU of 17 Dec. 2012 implementing enhanced cooperation in the area of the creation of
• Buzogány Aron, 2013, ‘Learning from the best? Interparliamentary networks and the parliamentary scrutiny of EU decision-making’, in Crum Ben and Fossum John Erik (ed), Practices of interparliamentary coordination in international politics. The EuropeanUnion and beyond , ECPR press, Colchester, 17-32.
• Casalena Pier Giorgio, Fasone Cristina and Lupo Nicola, 2013, ‘Protocol (No. 1) on the Role of National Parliaments in the EuropeanUnion’, in Blanke Hermann Josef and Mangiameli Stelio (eds), The Treaty on the EuropeanUnion (TEU). A
Artelaris, P., Kallioras, D. & Petrakos, G. (2010.), Regional Inequalities and Convergence Clubs in the EuropeanUnion New Member-States, Eastern Journal Of European Studies, Centre For European Studies , Alexandru Ioan Cuza University, 1 (1), 113-133.
Auf dem Brinke, A., Henrik E. & Joachim F. V. (2015). What kind of convergence does the Euro area need?, Gütersloh: Bertelsmann Stiftung und Jacques Delors Institut: Berlin. Retrieved from: https://www.delorsinstitut.de/2015/wp-content/uploads/2015/12/Convergence
. (2005). Misperceptions of social norms about tax compliance: From theory to intervention. Journal of Economic Psychology, 26(6), 862-883.
Williams, C. C., & Martínez, Á. (2014). Explaining cross-national variations in tax morality in the EuropeanUnion: an exploratory analysis. Studies of Transition States and Societies, 6(1).
World Bank. Worldwide Governance Indicators. http://info.worldbank.org/governance/wgi
An opportunity and a challenge. Migration in the EuropeanUnion , in: Europe on the move, European Commission , Directorate-General for Communication, Manuscript completed in May 2009.
Brady, H. (2011). The June European Council: Migrants on their minds, Center for European Reform , CER April 08.
Cecil, N. (2011). Mass immigration from Africa ‘could create a full-scale crisis’, London Evening Standard , 13 May.
Conclusions, European Council
competitiveness report 2010 . Luxembourg: Publications Office of the EuropeanUnion.
EC. (2015). Monitoring the digital economy & society 2016-2021 . Brussels: European Commission, DG Communications Networks, Content & Technology.
EC. (2018). Digital transformation scoreboard 2018. EU businesses go digital: Opportunities, outcomes and uptake internal market . Luxembourg: Publications Office of the EuropeanUnion.
Ernst, H., & Omland, N. (2011). The Patent Asset Index: A new approach to benchmark patent portfolios. World Patent Information , 33 , 34
Fabrizio D’ascenzo, Adrian Tantau, Marco Savastano and Ana-Maria Iulia Şanta
Environmental Management and Material Flow Management, www.emfm.tf.bor.ac.rs .
Tantau, Adrian Dumitru, Maassen, Maria Alexandra, Fratila, Laurentiu (2018). Models for Analyzing the Dependencies between Indicators for a Circular Economy in the EuropeanUnion. Sustainability 2018, 10, 2141, doi:10.3390/su10072141.
UN (2018) 68% of the world population projected to live in urban areas by 2050, 16 May 2018, New York, https://www.un.org/development/desa/en/news/population/2018-revision-of-world-urbanization-prospects.html , accessed on 12 December 2018.
Is the principle of concentration applied at all levels?
 BACHTLER, J. - WREN, C. (2006) Evaluation of EuropeanUnion Cohesion policy: Research questions and policy challenges. In Regional Studies. ISSN 1360-0591, 2006, Vol. 40, No.2, p. 143-153.
 BARCA, F. (2009) An Agenda for a Reformed Cohesion Policy. A place-based approach to meeting EuropeanUnion challenges and expectations. Independent Report. 2009. 244 p.
 BIS (Department of Business, Innovation and Skills), (2009) Research to improve the assessment of additionality, 2009, BIS Occasional