During the typesetting process for this article (Athanasiadou N. and Vogiatzis N., 2021), the following footnote was removed in both PDF and HTML versions. The publisher regrets this error and offers our sincerest apologies to the authors.
“Earlier ideas were presented at the UACES 47th Annual Conference in Krakow (2017), the EGPA Annual Conference in Lausanne (2018), and the workshop on multi-level administration in Brussels (2019). All participants are duly thanked for their comments and observations. The authors are grateful to Mariolina Eliantonio and Merijn Chamon for their valuable comments and suggestions on earlier versions of this Article. All errors remain our own.”