TY - JOUR T1 - Standard & Poor's Quality Rankings Revisited JF - The Journal of Portfolio Management SP - 64 LP - 68 DO - 10.3905/jpm.1987.64 VL - 13 IS - 3 AU - Frederick L. Muller AU - Bruce D. Fielitz Y1 - 1987/04/30 UR - https://pm-research.com/content/13/3/64.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -