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以下是所求的四篇：
1. Grossman, S. J., 1977. The existence of futures markets, noisy rational expectations and informational externalities. Review of Economic Studies 44 (3), 431–449.
2. Hicks, J. R., 1939. Value and Capital: An Inquiry into Some Fundamental Principles of Economic Theory. Clarendon Press, Oxford.
3. Keynes, J. M., 1923. Some aspects of commodity markets. Manchester Guardian Commercial 13, 784–786.
4. Samuelson, P. A., 1965. Proof that properly anticipated prices fluctuate randomly. Industrial Management Review 6 (2), 41–49.
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