RT Journal Article SR Electronic T1 Bond Equivalents of Stock Returns JF The Journal of Portfolio Management FD Institutional Investor Journals SP 25 OP 30 DO 10.3905/jpm.1978.408636 VO 4 IS 3 A1 Martin L. Leibowitz YR 1978 UL https://pm-research.com/content/4/3/25.abstract AB