8den Hertog P,Untrecht D.Knowledge intensive business service as co-producers of innovation[J].International Journal of Innovation Management,2000(4):491-528.
9Alam I.Removing the fuzziness from the fuzzy front-end of service innovations through customer interactious[J].Industrial Marketing Management,2006(35):468-480.
10Researchers and discovery services:Behavior,perceptions and needs[R].Research Information Network,2006.
