1. Berndt, E. K., Hall, B. H., Hall, R. E., and Hausman, J. A. (1974), Estimation and inference in nonlinear structural models, Annals of Economic and Social Measurement, 3, 653-665.

2. Bollerslev, T. (1986), Generalized autoregressive conditional heteroskedasticity, Journal of Econometrics, 31, 307-327.

3. Box, G. E. P. and Jenkins, G. M. (1970), Time Series Analysis: Forecasting and Control, Holden-Day, San Francisco.

4. Brockwell, P. J. and Davis, R. A. (1987), Time Series: Theory and Methods, Springer-Verlag, New York.

5. Campbell, M. J. and Walker A. M. (1977), A survey of statistical work on the Mackenzie River series of annual Canadian lynx trappings for the years 1821-1934 and a new analysis, Journal of the Royal Statistical Society, Series A, 140, 411-431.

6. Domowitz, I. and Hakkio, C. S. (1985), Conditional variance and the risk premium in the foreign exchange market, Journal of International Economics, 19, 47-66.

7. Engle, R. F. (1982), Autoregressive conditional heteroscedasticity with estimates of the variance of United Kingdom inflation, Econometrica, 50, No. 4, 987-1007.

8. Engle, R. F., Lilien, D. M., and Robins, R. P. (1987), Estimating time varying risk premia in the term structure: the ARCH-M Model, Econometrica, 55, No. 2, 391-407.

9. Godolphin, E. J. and Unwin, J. M. (1983), Evaluation of the covariance matrix for the maximum likelihood estimator of a Gaussian autoregressive moving average process, Biometrika 70, 279-284.

10. Granger, C. W. J. and Newbold, P. (1986), Forecasting Economic Time Series, Academic Press, New York.

11. Harvey, A. C. (1981), Time Series Models, Philip Allan, Oxford.

12. Harvey, A. C. (1989), Forecasting, Structural Time Series Models and the Kalman Filter, Cambridge University Press, Cambridge.

13. Jones, R. H. (1978), Multivariate autoregression estimation using residuals, Applied Time Series Analysis (ed. D. F. Findley), Academic Press, New York, 139-147.

14. Kendall, M. and Ord, J. K. (1990), Time Series, 3rd ed., Edward Arnold, London.

15. Morettin, P. A. (1984), The Levinson algorithm and its applications in time series analysis, International Statistical Review, 52, 83-92.

16. Priestley, M. B. ( 1981), Spectral Analysis and Time Series, Vols. 1 and 2, Academic Press, New York.

17. Reinsel, G. C. (1993), Elements of Multivariate Time Series Analysis, Springer-Verlag, New York.

18. Wilson, G. T. (1973), The Estimation of Parameters in Multivariate Time Series Models, Journal of the Royal Statistical Society, Series B, 35, 76-85.