RT Journal Article SR Electronic T1 Another look at barbells versus ladders JF The Journal of Portfolio Management FD Institutional Investor Journals SP 54 OP 59 DO 10.3905/jpm.1986.409056 VO 12 IS 3 A1 Edward A. Dyl A1 Stanley A.. Martin, Jr YR 1986 UL https://pm-research.com/content/12/3/54.abstract AB