%0 Journal Article %A Dennis E. Logue %T Are Stock Markets Becoming Riskier %D 1976 %R 10.3905/jpm.1976.13 %J The Journal of Portfolio Management %P 13-19 %V 2 %N 3 %U https://jpm.pm-research.com/content/iijpormgmt/2/3/13.full.pdf