%0 Journal Article %E Peter L. Bernstein %T The Theory of Punctuated Equilibrium %D 1989 %R 10.3905/jpm.15.3.1 %J The Journal of Portfolio Management %P 1-1 %V 15 %N 3 %U https://jpm.pm-research.com/content/iijpormgmt/15/3/1.full.pdf