PT - JOURNAL ARTICLE AU - Richard A. Brasley TI - Portfolio Theory Versus Portfolio Practice AID - 10.3905/jpm.1990.6 DP - 1990 Jul 31 TA - The Journal of Portfolio Management PG - 6--10 VI - 16 IP - 4 4099 - https://pm-research.com/content/16/4/6.short 4100 - https://pm-research.com/content/16/4/6.full