PT - JOURNAL ARTICLE AU - Keith P Ambachtsheer TI - Profit potential in an “almost efficient” market AID - 10.3905/jpm.1974.408485 DP - 1974 Oct 31 TA - The Journal of Portfolio Management PG - 84--87 VI - 1 IP - 1 4099 - https://pm-research.com/content/1/1/84.short 4100 - https://pm-research.com/content/1/1/84.full