PT - JOURNAL ARTICLE AU - Ravi Shukla AU - Charles A Trzcinka TI - Research on Risk and Return AID - 10.3905/jpm.1991.15 DP - 1991 Apr 30 TA - The Journal of Portfolio Management PG - 15--21 VI - 17 IP - 3 4099 - https://pm-research.com/content/17/3/15.short 4100 - https://pm-research.com/content/17/3/15.full