RT Journal Article SR Electronic T1 Does Duration Extensions Enhance Long-Term Expected Returns? JF The Journal of Fixed Income FD Institutional Investor Journals SP 23 OP 36 DO 10.3905/jfi.1996.408172 VO 6 IS 2 A1 Antti Ilmanen YR 1996 UL https://pm-research.com/content/6/2/23.abstract AB