PT - JOURNAL ARTICLE ED - , TI - Editor's Letter AID - 10.3905/joi.1999.390898 DP - 1999 Aug 31 TA - The Journal of Investing PG - 8--8 VI - 8 IP - 3 4099 - https://pm-research.com/content/8/3/8.short 4100 - https://pm-research.com/content/8/3/8.full