PT - JOURNAL ARTICLE AU - J. Michael Murphy TI - Efficient Markets, Index Funds, Illusion, and Reality AID - 10.3905/jpm.1977.408620 DP - 1977 Oct 31 TA - The Journal of Portfolio Management PG - 5--20 VI - 4 IP - 1 4099 - https://pm-research.com/content/4/1/5.short 4100 - https://pm-research.com/content/4/1/5.full