Howaldt, JürgenKopp, RalfSchwarz, Michael2015-03-192015-03-192015http://hdl.handle.net/2003/3394610.17877/DE290R-7207PostprintenTarde, Gabriel deSoziologische TheorieSozialinnovation300On the theory of social innovationsTarde's neglected contribution to the development of a sociological innovation theorybookSoziologische TheorieSozialinnovationTarde, Gabriel de