PT - JOURNAL ARTICLE ED - Bernstein, Peter L TI - An Anniversary to Celebrate AID - 10.3905/jpm.16.1.1 DP - 1989 Oct 31 TA - The Journal of Portfolio Management PG - 1--1 VI - 16 IP - 1 4099 - https://pm-research.com/content/16/1/1.short 4100 - https://pm-research.com/content/16/1/1.full