RT Journal Article SR Electronic T1 Volatility and the Yield Curve JF The Journal of Fixed Income FD Institutional Investor Journals SP 49 OP 53 DO 10.3905/jfi.1991.692346 VO 1 IS 1 A1 Robert B Litterman A1 Josè Scheinkman A1 Laurence Weiss YR 1991 UL https://pm-research.com/content/1/1/49.abstract AB