%0 Journal Article %A Jon A. Christopherson %A Andrew L. Turner %T Volatility and predictability of manager alpha %D 1991 %R 10.3905/jpm.1991.409388 %J The Journal of Portfolio Management %P 5-12 %V 18 %N 1 %U https://jpm.pm-research.com/content/iijpormgmt/18/1/5.full.pdf