References
- Babbs , S.H. and Nowman , K.B. 1999 . Kalman filtering of generalized vaslcek term structure models . Journal of Financial and Quantitative Analysis , 34 : 115 – 130 .
- Langetieg , T.C. 1980 . A multivariate model of the term structure . Journal of Finance , 35 : 71 – 91 .