[3]
Innovation in the service sector: The demand for service-specific innovation measurement concepts and typologies[J] . Christiane Hipp,Hariolf Grupp.Research Policy . 2005 (4)
[3]
Innovation in the service sector: The demand for service-specific innovation measurement concepts and typologies[J] . Christiane Hipp,Hariolf Grupp.Research Policy . 2005 (4)