%0 Journal Article %A Edward A. Dyl %T Negatbe Betas %B The Attractions of Selling Short %D 1975 %R 10.3905/jpm.1975.408527 %J The Journal of Portfolio Management %P 74-76 %V 1 %N 3 %U https://jpm.pm-research.com/content/iijpormgmt/1/3/74.full.pdf