@book { FluchtMigrationundIntegrationFlightMigrationandIntegration,
    title = "Flucht, Migration und Integration Flight, Migration and Integration",
    author = "Matthias {Heesch} and Russell {Kleckley} and Hans {Schwarz}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14396",
    url = "https://www.peterlang.com/document/1110720"
}