PT - JOURNAL ARTICLE AU - Brian Jacobsen TI - INVITED EDITORIAL COMMENT AID - 10.3905/jpm.2013.39.4.004 DP - 2013 Jul 31 TA - The Journal of Portfolio Management PG - 4--6 VI - 39 IP - 4 4099 - https://pm-research.com/content/39/4/4.short 4100 - https://pm-research.com/content/39/4/4.full