%0 Journal Article %A Edwin J. Elton %A Martin J. Gruber %A Manfred W. Padberg %T Optimal Portfolios from Simple Ranking Devices %D 1978 %R 10.3905/jpm.1978.408641 %J The Journal of Portfolio Management %P 15-19 %V 4 %N 3 %U https://jpm.pm-research.com/content/iijpormgmt/4/3/15.full.pdf