%0 Journal Article %A Peter L. Bernstein %T “Inadvertent subtracters” %D 1983 %R 10.3905/jpm.9.3.4 %J The Journal of Portfolio Management %P 4-4 %V 9 %N 3 %U https://jpm.pm-research.com/content/iijpormgmt/9/3/4.full.pdf