TY - JOUR T1 - Instrumentality JF - The Journal of Portfolio Management SP - 9 LP - 20 DO - 10.3905/jpm.1995.409543 VL - 22 IS - 1 AU - Martin S. Fridson AU - Jón G. Jónsson Y1 - 1995/10/31 UR - https://pm-research.com/content/22/1/9.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -