RT Journal Article SR Electronic T1 Duration models JF The Journal of Portfolio Management FD Institutional Investor Journals SP 50 OP 54 DO 10.3905/jpm.1988.409180 VO 15 IS 1 A1 Gerald O. Bierwag A1 George G. Kaufman A1 Cynthia M. Latta YR 1988 UL https://pm-research.com/content/15/1/50.abstract AB