%0 Journal Article %A J.B. Gould %A Eric H. Sorensen %T Duration %B A factor in equity pricing %D 1986 %R 10.3905/jpm.1986.409079 %J The Journal of Portfolio Management %P 38-43 %V 13 %N 1 %U https://jpm.pm-research.com/content/iijpormgmt/13/1/38.full.pdf