%0 Journal Article %A Frederick L. Muller %A Bruce D. Fielitz %A Myron T. Greene %T S&P Quality Group Rankings %B Risk and Return %D 1983 %R 10.3905/jpm.1983.39 %J The Journal of Portfolio Management %P 39-42 %V 9 %N 4 %U https://jpm.pm-research.com/content/iijpormgmt/9/4/39.full.pdf