SOURCES OF SUPERIOR PERFORMANCE 959 BUZZELL, R D, B T GALE AND R G M. SULTAN, " Market Share-A Key to Profitability, Harvard Business CoHEN, K. AND J. POGUE, "An Empirical Evaluation of Alternative Portfolio-Selection Models, " J. Business CoNNOR, G. ANDR. A. KORAJCZYK, "Performance Measurement with the Arbitrage Pricing Theory: A New Framework for Analysis, " J Financial Economics, 15(1986), 373-394 DEMSETZ, H. " Industry Structure, Market Rivalry and Public Policy, "J. Law and Economics, 16(1973), 1-9 ELTON, E J. AND M. J. GRUBER, Estimating the Dependence Structure of Share Prices, "J. Finance, 28 (1973),1203-1 52(1984),87-1 JacoBSON, R, "Distinguishing Among Competing Theories of the Market Share Effect, J. Marketing ( October 1988), 68-80. JENSEN, M. C, "Risk, the Pricing of Capital Assets and the Evaluation of Investment Portfolios, "J Business 42(1969),167-24 KEITHAHN, C. F, The Brewing Industry, The Federal Trade Commission, Washington, DC, 1978 KING, B. F, " Market and Industry Factors in Stock Price Behavior, "J. Business, 39(1966), 139-190 KON, S.J., "The Market-Timing Performance of Mutual Fund Managers, "J. Business, 56(1983), 323-34 AND W. P. LAU, "Specification Tests for Portfolio Regression Parameter Stationarity and the Implications Empirical Research, "J. Finance, 34(1979),451-40 IVINGSTON, M,"Industry Movements of Common Stocks, J, Finance, 32(1977),861-874 LYNK, w. J, "Interpreting Rising Concentration: The Case of Beer, "J. Business, 57(1984), 43-55. MONTGOMERY, C. AND B. WERNERFELT, "Diversification, Ricardian Rents, and Tobins q, RAND. Eco- olcs,19(1988),623-632 MYERS, S L, "A Re-examination of Market and Industry Factors in Stock Price Behavior, J. finance, PORTER, M. E, Con Yo nd Regulation, "J. Political Economy, 83(1975), 807-827 PRESCOTT. J. E.A. TRAMAN,The Market Share-Profitibility Relationship: An and Contradictions, Strategic Mai ROLL, R, "Ambiguity When Performance Is Measured by the Securities Market Line, "J, Finance, 33(1978) 1031-1069 RUMELT, R. P, "Toward A Strategic Theory of the Firm, "in R. Lamb(Ed )Competitive Strategic management Prentice-Hall, Englewood Cliffs, NJ, 1984 AND R. WENSLEY, "In Search of the Market Share Effect, "Proc. Acad. Management, (1981), 2-6 SCHENDEL, D E AND G. R. PATTON, "A Simultaneous Equation Model of Corporate Strategy, " Management Sci,24(1978),l611-1621 SCHMALENSEE, R, "Do Firms Differ Much?, " Amer. Economic Rev., 75(1985), 341-351 SCHOLES, M. AND J. WILLIAMS, "Estimating Betas from Non-synchronous Data, "J. Financial Economics, 5 (1977),309-327 SPENCE, A M, " The Learning Curve and Competition, "Bell J. Economics, 12(1981), 49-70 SULLIVAN, T. G."A Note on Market Power and Returns to Stockholders ' Rev. Economics and statist. 59 (1977),108-113 WERNERFELT, B, A Resource-based View of the Firm, "Strategic Management J., 5(1984), 171-180 AND C. A. MoNTGOMERY, "Tobins g and the Importance of Focus in Firm Performance, "Amer. Economic rev,78(1988),246-250