TY - JOUR T1 - Editor’s Letter JF - The Journal of Index Investing SP - 2 DO - 10.3905/jii.2014.4.4.002 VL - 4 IS - 4 A2 - Bruce, Brian R. Y1 - 2014/02/28 UR - https://pm-research.com/content/4/4/2.abstract N2 - ER -