RT Journal Article SR Electronic T1 How to produce value from portfolio measurement JF The Journal of Portfolio Management FD Institutional Investor Journals SP 13 OP 16 DO 10.3905/jpm.1981.408827 VO 8 IS 1 A1 Kenneth P. Pulliam YR 1981 UL https://pm-research.com/content/8/1/13.abstract AB