Under CopyrightStehnken, ThomasThomasStehnkenMuller, EmmanuelEmmanuelMullerZenker, AndreaAndreaZenker2022-03-077.8.20122011https://publica.fraunhofer.de/handle/publica/29570310.24406/publica-fhg-295703en303600Happiness and innovation avenues for further researchreport