推荐阅读文献：1.Dollar(1986):"Technological innovation,capital mobility,and the product cycle in North-South trade" ,AER,76,177-190

2.Jensen and Thursby.(1986)," A strategy approach to the product life cycle". JIE 21,269-284

3.Segerstrom (1991),"Innovation ,immitation and economic growth " JPE 99,807-827