%0 Journal Article %A Peter L Bernstein %T Peter L. Bernstein Special Commemorative Section %D 2009 %R 10.3905/JPM.2009.35.4.004 %J The Journal of Portfolio Management %P 1-33 %V 35 %N 4 %U https://jpm.pm-research.com/content/iijpormgmt/35/4/1.2.full.pdf