83. Samueslon, P, 1965, Proof that properly anticipated prices fluctuate randomly, Industrial management review 6, pp 41-49 34. -, 1970, The Fundamental Approximation Theorem of Portfolio Analysis in Terms of Means, Variances and Higher Moments, "Review of Economic Studies 37 85. Sharpe, W, 1964, Capital Asset Prices, Journal of Finance 19, September, pp. 425-42 86. Sharpe, W, Gordon J. Alexander, and Jeffery V. Bailey, 1999, Investments, 6 h edition, Englewood. NJ: Prentice Hall 87. Stigler, G.J., 1971,"The Theory of Economic Regulation", Bell Journal of Economics and Management Science, Volume 2 88. Thompson,J, 1976, "Sources of Systematic Risk in Common Stocks", Journal of Business Apr 89. Viscusi, W.K., Vernon, J M, Harrington, J.E., Jr, 1992, Economics of Regulation and Antitrust, D. C. Heath and Company 90. Wagner, W, and S. Lau, 1971, The Effect of Diversification on Risks, Financial Analyst Journal, pp 48-53 91. Williams, J B, 1938, The Theory of Investment Value, Harvard, Cambridge, Mass 92. Yakov Amihud and Haim Mendelson, 1991, "Liquidity, Asset Prices and Financial Policy Financial Analysts Journal 47, pp 56-6683. Samueslon, P.，1965, “Proof that properly anticipated prices fluctuate randomly”, Industrial management review 6, pp.41-49. 84. ——，1970, “The Fundamental Approximation Theorem of Portfolio Analysis in Terms of Means, Variances and Higher Moments,” Review of Economic Studies 37. 85. Sharpe, W., 1964, “Capital Asset Prices,” Journal of Finance 19, September, pp.425-42. 86. Sharpe, W.， Gordon J. Alexander， and Jeffery V. Bailey, 1999, Investments, 6th edition, Englewood, NJ: Prentice Hall. 87. Stigler, G.J., 1971, “The Theory of Economic Regulation”, Bell Journal of Economics and Management Science, Volume 2. 88. Thompson, J., 1976, “Sources of Systematic Risk in Common Stocks”, Journal of Business, April. 89. Viscusi, W.K., Vernon, J.M., Harrington, J.E., Jr., 1992, Economics of Regulation and Antitrust, D.C. Heath and Company. 90. Wagner, W., and S. Lau, 1971, “The Effect of Diversification on Risks,” Financial Analyst Journal, pp.48-53. 91. Williams，J.B.，1938, The Theory of Investment Value, Harvard, Cambridge, Mass.. 92. Yakov Amihud and Haim Mendelson, 1991, “Liquidity, Asset Prices and Financial Policy”, Financial Analysts Journal 47, pp.56-66