RT Journal Article SR Electronic T1 The future for quantitative investment products JF The Journal of Portfolio Management FD Institutional Investor Journals SP 78 OP 78 DO 10.3905/jpm.1989.409192 VO 15 IS 2 A1 Gilbert L. Beebower YR 1989 UL https://pm-research.com/content/15/2/78.abstract AB