Under CopyrightDaimer, StephanieStephanieDaimerHufnagl, MiriamMiriamHufnaglWarnke, PhilinePhilineWarnke2022-03-045.12.20122012https://publica.fraunhofer.de/handle/publica/22963210.24406/publica-fhg-229632en303600Challenge-oriented policy-making and innovation systems theorybook article