RT Journal Article SR Electronic T1 Non-infinitesimal rate changes and macaulay duration JF The Journal of Portfolio Management FD Institutional Investor Journals SP 69 OP 73 DO 10.3905/jpm.1988.409145 VO 14 IS 2 A1 Shantaram P. Hegde A1 Kenneth P.. Nunn, Jr YR 1988 UL https://pm-research.com/content/14/2/69.abstract AB