1. Bachter J, Gorzelak G (2007) Reforming EU cohesion policy. Policy Stud 28(4):309–326
2. Dahl RA, Tufte ER (1973) Size and democracy. Stanford University Press, Stanford
3. Danielewicz J (2013) Współpraca gmin w obszarach metropolitalnych w ramach związków międzygminnych. Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu 284:114–131
4. Domański B (2003) Industrial change and foreign direct investment in the postsocialist economy: the case of Poland. Eur Urban Reg Stud 10(2):99–118
5. EC (2014) Geography of expenditure final report work package 13: ex post evaluation of cohesion policy programmes 2007–2013, focusing on the European Regional Development Fund (ERDF) and the Cohesion Fund (CF).
https://ec.europa.eu/regional_policy/sources/docgener/evaluation/pdf/expost2013/wp13_final_report_en.pdf
. Accessed 5 Mar 2019