TY - JOUR T1 - Investment rules, margin, and market volatility JF - The Journal of Portfolio Management SP - 45 LP - 52 DO - 10.3905/jpm.1989.409233 VL - 16 IS - 1 AU - Gew-rae Kim AU - Harry M. Markowitz Y1 - 1989/10/31 UR - https://pm-research.com/content/16/1/45.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -