RT Journal Article SR Electronic T1 Intertemporal Causality Between GNMA and T-bond Futures Prices JF The Journal of Fixed Income FD Institutional Investor Journals SP 90 OP 94 DO 10.3905/jfi.1994.408098 VO 3 IS 4 A1 Asim Ghosh A1 Keith Johnson YR 1994 UL https://pm-research.com/content/3/4/90.abstract AB