9Rush C.Roy R.Analysis of Cost Estimating Processes Used within a Concurrent Engineering Environment Throughout a Product Life Cycle[C].in CE2000 Conference,Lyon,France.2000,(7):17-20.
10Guellec D,van Pottelsberghe B,de la Potterie B.The impact of public R&D expenditure on business R&D[J].Economics of Innovation and New Technologies,2003,12(3):225-244.