RT Journal Article SR Electronic T1 Dynamic asset allocation rules JF The Journal of Portfolio Management FD Institutional Investor Journals SP 19 OP 26 DO 10.3905/jpm.1991.409344 VO 17 IS 4 A1 Robert R. Trippi A1 Richard B. Harriff YR 1991 UL https://pm-research.com/content/17/4/19.abstract AB