PT - JOURNAL ARTICLE AU - Haim Levy TI - Reply AID - 10.3905/jpm.1982.408896 DP - 1982 Oct 31 TA - The Journal of Portfolio Management PG - 69--70 VI - 9 IP - 1 4099 - https://pm-research.com/content/9/1/69.short 4100 - https://pm-research.com/content/9/1/69.full