PT - JOURNAL ARTICLE AU - Frank A. Sortino AU - Robert van der Meer TI - Downside risk AID - 10.3905/jpm.1991.409343 DP - 1991 Jul 31 TA - The Journal of Portfolio Management PG - 27--31 VI - 17 IP - 4 4099 - https://pm-research.com/content/17/4/27.short 4100 - https://pm-research.com/content/17/4/27.full