PT - JOURNAL ARTICLE AU - O. Maurice Joy AU - Charles P. Jones TI - Should We Believe the Tests of Market Efficiency? AID - 10.3905/jpm.1986.49 DP - 1986 Jul 31 TA - The Journal of Portfolio Management PG - 49--54 VI - 12 IP - 4 4099 - https://pm-research.com/content/12/4/49.short 4100 - https://pm-research.com/content/12/4/49.full