PT - JOURNAL ARTICLE AU - Fischer Black TI - Beta and Return AID - 10.3905/jpm.1993.409462 DP - 1993 Oct 31 TA - The Journal of Portfolio Management PG - 8--18 VI - 20 IP - 1 4099 - https://pm-research.com/content/20/1/8.short 4100 - https://pm-research.com/content/20/1/8.full