RT Journal Article SR Electronic T1 Invited Editorial Comment JF The Journal of Portfolio Management FD Institutional Investor Journals SP 4 OP 5 DO 10.3905/jpm.2012.38.4.004 VO 38 IS 4 A1 Amenc, Noël A1 Martellini, Lionel YR 2012 UL http://jpm.pm-research.com/content/38/4/4.abstract AB