8Vandermerwe S, Rada J. Servitization of Business: Adding Value by Adding Services [J]. European Management Journal, 1988,6 (4) :314 -324.
9Mathieu V. Product Services: From a Service Supporting the Product to a Service Supporting the Client[J]. Journal of Business&Industrial Marketing, 2001, 16( 1 ) :39-58.
10Jacobsson N. Emerging Product Strategies: Selling Services of Remanufactured Products[D]. IIIEE Dissertation, Lund University, Sweden, 2000.