RT Journal Article SR Electronic T1 Interpreting the Evidence on Risk and Expected Return JF The Journal of Portfolio Management FD Institutional Investor Journals SP 44 OP 45 DO 10.3905/jpm.1993.409452 VO 19 IS 3 A1 Kenneth J Winston YR 1993 UL https://pm-research.com/content/19/3/44.abstract AB