6Baines, T. , Lightfoot, H. W. , Evans, S. and Neely, A. State-of-the-art in Product Service-Systems [ J ]. Proceedings of IMechE Part B: Journal of Engineering Manufacture,2007,221 , (10) :1543 -1551.
7Baumol W. J. Macroeconomics of Unbalanced Growth : The Anatomy of Urban Crisis [ J ]. The American Economic Review, 1967,57, (3) :415 -426.
8Correa, H. L , Ellram, L. M. , Scavarda, A. and Cooper, M. An Operations Management View of the Services and Goods Offer- ing Mix [ J]. Internacional Journal of Operations and Production Managemen ,2007,27, (5) :444 -463.
9Gebauer, H. and Friedli, T. Behavioural Implications of the Transition Process from Products to Services [ J ]. Journal of Busi- ness & Industrial Marketing,2005,20, (2) :70-80.
10Gebauer, H. and Fleisch, E. An Investigation of the Relationship between Behavioural Processes, Motivation, Investments in the Service Business and Service Revenue [ J ]. Industrial Marketing Management ,2007, (36) :337 -48.
