1. Skinner, G. W., Presidential address: the structure of Chinese history, Journal of Asian Studies, 1983, 44: 271–292.
2. Elvin, M., The Pattern of the Chinese Past, Stanford: Stanford University Press, 1973.
3. Hartwell, R. M., A cycle of economic change in imperial China: coal and iron in Northeast China, 750–1350, Journal of the Economic and Social History of the Orient, 1967, 10: 102–159.
4. RWGCRST (Research Working Group on Cyclic Rhythms and Secular Trends), Cyclical rhythms and secular trends of capitalist world-economy: some premises, hypothesis, and questions, Review, 1979, 2: 483–500.
5. Cowie, J., Climate and Human Change, Disaster or Opportunity? New York: Parthenon Publishing, 1998.