PT - JOURNAL ARTICLE ED - , TI - Editor's Letter AID - 10.3905/joi.6.1.7 DP - 1997 Feb 28 TA - The Journal of Investing PG - 7--7 VI - 6 IP - 1 4099 - https://pm-research.com/content/6/1/7.short 4100 - https://pm-research.com/content/6/1/7.full