TY - JOUR T1 - Editor’s Letter JF - The Journal of Index Investing SP - 1 DO - 10.3905/jii.2012.3.1.001 VL - 3 IS - 1 A2 - Bruce, Brian R. Y1 - 2012/05/31 UR - https://pm-research.com/content/3/1/1.abstract N2 - ER -