TY - JOUR T1 - INVITED EDITORIAL COMMENT JF - The Journal of Portfolio Management SP - 1 LP - 3 DO - 10.3905/jpm.2013.39.4.001 VL - 39 IS - 4 AU - Harry M. Markowitz Y1 - 2013/07/31 UR - https://pm-research.com/content/39/4/1.abstract N2 - ER -