PT - JOURNAL ARTICLE AU - Stephen B. Timbers TI - Equity Research After Modern Portfolio Theory AID - 10.3905/jpm.1979.408684 DP - 1979 Apr 30 TA - The Journal of Portfolio Management PG - 52--56 VI - 5 IP - 3 4099 - https://pm-research.com/content/5/3/52.short 4100 - https://pm-research.com/content/5/3/52.full