PT - JOURNAL ARTICLE AU - Peter L. Bernstein TI - An Important Announcement AID - 10.3905/jpm.1998.409645 DP - 1998 Jul 31 TA - The Journal of Portfolio Management PG - 1--8 VI - 24 IP - 4 4099 - https://pm-research.com/content/24/4/1.short 4100 - https://pm-research.com/content/24/4/1.full