@book { TheHistoricalEvolutionofRegionalizingIdentitiesinEurope, title = "The Historical Evolution of Regionalizing Identities in Europe", author = "Nils Holger {Petersen} and Dick {De Boer} and Bas {Spierings} and Martin {Van der Velde}", year = "2020", publisher = "Peter Lang Verlag", address = "Lausanne, Switzerland", doi = "10.3726/b17167", url = "https://www.peterlang.com/document/1058722" }