%0 Journal Article %A Brian M. Rom %A Kathleen W. Ferguson %T “Portfolio Theory is Alive and well” %B A Response %D 1994 %R 10.3905/joi.3.3.24 %J The Journal of Investing %P 24-44 %V 3 %N 3 %U https://joi.pm-research.com/content/iijinvest/3/3/24.full.pdf