TY - JOUR T1 - Editor’s Letter JF - The Journal of Index Investing SP - 1 DO - 10.3905/jii.2013.3.4.002 VL - 3 IS - 4 A2 - Bruce, Brian R. Y1 - 2013/02/28 UR - https://pm-research.com/content/3/4/1.abstract N2 - ER -