Under CopyrightWappler, StefanStefanWapplerUlrich, JensJensUlrichGraffenberger, MartinMartinGraffenbergerRauch, MathiasMathiasRauch2022-03-0816.12.20202011https://publica.fraunhofer.de/handle/publica/30067010.24406/publica-fhg-300670en620670International Activities of German Clusters and Regional Networksstudy