Under CopyrightStahlecker, ThomasThomasStahleckerKroll, HenningHenningKroll2022-03-078.8.20122012https://publica.fraunhofer.de/handle/publica/29596810.24406/publica-fhg-295968en303600The cluster concept as a multi-dimensional thematic field: Methodological and substantive perspectivesreport