Media type: E-Article Title: Wir brauchen offene Grenzen Contributor: Schunk, Henrik imprint: VDI Verlag GmbH, 2021 Published in: VDI nachrichten Language: Not determined DOI: 10.51202/0042-1758-2021-18-19-20-2 ISSN: 0042-1758 Origination: Footnote: