TY - JOUR T1 - Editor’s Letter JF - The Journal of Index Investing SP - 2 LP - 2 DO - 10.3905/jii.2015.5.4.002 VL - 5 IS - 4 AU - Brian Bruce Y1 - 2015/02/28 UR - https://pm-research.com/content/5/4/2.abstract N2 - ER -