RT Journal Article SR Electronic T1 Prepayments on fixed-rate mortgage-backed securities JF The Journal of Portfolio Management FD Institutional Investor Journals SP 73 OP 82 DO 10.3905/jpm.1989.409207 VO 15 IS 3 A1 Scott F. Richard A1 Richard Roll YR 1989 UL https://pm-research.com/content/15/3/73.abstract AB