TY - JOUR T1 - Two Tiers - But How Many Decisions? JF - The Journal of Portfolio Management SP - 5 LP - 12 DO - 10.3905/jpm.1976.5 VL - 2 IS - 3 AU - Marshall E. Blume Y1 - 1976/04/30 UR - https://pm-research.com/content/2/3/5.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -