%0 Journal Article %A Peter L. Bernstein %T 1929 and all that %D 1975 %R 10.3905/jpm.1975.408511 %J The Journal of Portfolio Management %P 4-5 %V 1 %N 2 %U https://jpm.pm-research.com/content/iijpormgmt/1/2/4.full.pdf