PT - JOURNAL ARTICLE AU - Robert A Ferguson TI - The trouble with performance measurement AID - 10.3905/jpm.1986.409053 DP - 1986 Apr 30 TA - The Journal of Portfolio Management PG - 4--9 VI - 12 IP - 3 4099 - https://pm-research.com/content/12/3/4.short 4100 - https://pm-research.com/content/12/3/4.full