PT - JOURNAL ARTICLE AU - Robert A. Levy TI - How to measure research performance AID - 10.3905/jpm.1974.408484 DP - 1974 Oct 31 TA - The Journal of Portfolio Management PG - 44--49 VI - 1 IP - 1 4099 - https://pm-research.com/content/1/1/44.short 4100 - https://pm-research.com/content/1/1/44.full