PT - JOURNAL ARTICLE ED - Bruce, Brian R. TI - Editor’s Letter AID - 10.3905/jii.2013.3.4.002 DP - 2013 Feb 28 TA - The Journal of Index Investing PG - 1 VI - 3 IP - 4 4099 - https://pm-research.com/content/3/4/1.short 4100 - https://pm-research.com/content/3/4/1.full