1. Alexander, J. W. 1954. The basic-nonbasic concept of urban economic functions.Economic Geography 30: 246–61.
2. Bell, D. 1973.The coming of postindustrial society: a venture in social forecasting. New York: Basic Books.
3. Beyers, W. B. 1983. The interregional structure of the U.S. economy.International Regional Science Review 8: 213–31.
4. Beyers, W. B., Alvine, M. J., and Johnsen, E. 1985.The service economy: export of services in the Central Puget Sound Region. Seattle: Central Puget Sound Economic Development District.
5. Birch, D. 1984. The changing rules of the game, finding a niche in the thoughtware economy.Economic Development Commentary 8, 1: 12–16.