4C.Freeman,The Economics of Industrial Innovation [M], The MIT Press, 1982,pp.212-214.
5Joseph Schumpeter. Capitalism, socialism, and democracy [M]. London: Allen and Unwin. 5th ed 1976.
6J.Hicks, The Theory of Wages [M], London, Macmillan, 1963, p.124.
7Steven J. Kline and Nathan Rosenberg 1986, An Overview of Innovation, in Ralph Landau and Nathan Rosenberg (eds.): The Positive Sum Strategy, Harnessing Technology for Economic Growth [M], National Academy Press, Washington, D.C. 1986, pp.275-305.