RT Journal Article SR Electronic T1 Invited Editorial Comment JF The Journal of Portfolio Management FD Institutional Investor Journals SP 1 OP 2 DO 10.3905/jpm.2012.38.3.001 VO 38 IS 3 A1 Jeffrey Halpern A1 Jim K. Liew YR 2012 UL https://pm-research.com/content/38/3/1.abstract AB