%0 Journal Article %A Robert M. Soldofsky %T Risk and return for longterm securities %B 1971 – 1982 %D 1984 %R 10.3905/jpm.1984.408986 %J The Journal of Portfolio Management %P 57-64 %V 11 %N 1 %U https://jpm.pm-research.com/content/iijpormgmt/11/1/57.full.pdf