PT - JOURNAL ARTICLE ED - Bruce, Brian R. TI - Editor’s Letter AID - 10.3905/jii.2011.1.4.002 DP - 2011 Feb 28 TA - The Journal of Index Investing PG - 2 VI - 1 IP - 4 4099 - https://pm-research.com/content/1/4/2.short 4100 - https://pm-research.com/content/1/4/2.full