9W.W.Rostow.The Fourth Industrial Revolution and American Society: Some Reflections on the Past of the Future [A].Furino A.Cooperation and Competition in the Global Economy: Issues and Strategies[C].Mass Ballinger Press, 1998:63-64.
10A.C.Cooper, J.A.Hornaday & K.H.Vesper. The Field of Entrepreneurship over Time [A].Frontiers of Entrepreneurship Research, Wellesley, MA: Babson College, 1999.