%0 Journal Article %A Scott D Opsal %T Timee diversification %B The surest route to lower risk Comment %D 1986 %R 10.3905/jpm.1986.409075 %J The Journal of Portfolio Management %P 74-75 %V 12 %N 4 %U https://jpm.pm-research.com/content/iijpormgmt/12/4/74.full.pdf