RT Journal Article SR Electronic T1 Duration as a Practical Tool for Bond Management JF The Journal of Portfolio Management FD Institutional Investor Journals SP 53 OP 57 DO 10.3905/jpm.1977.408611 VO 3 IS 4 A1 Richard W. McEnally YR 1977 UL https://pm-research.com/content/3/4/53.abstract AB