TY - JOUR T1 - Editor’s Letter JF - The Journal of Index Investing SP - 2 LP - 3 DO - 10.3905/jii.2011.2.1.002 VL - 2 IS - 1 A2 - Bruce, Brian R. Y1 - 2011/05/31 UR - https://pm-research.com/content/2/1/2.abstract N2 - ER -