Enders, W. (2004). Applied Econometric Time Series, 3rd Ed.
Frank, J. and Garcia. P. (2006). Selected paper prepared for the presentation at the American Agricultural Economics Association meeting, long Beach, California, July, 23-26.
Godfrey, L. (1988). Misspecification Tests in Econometrics, Cambridge University Press, Cambridge.
Irina, B. and Lansink, A. (2003). contributed paper selected for presentation at the 25th Internation conference of Agricultural Economists, August 16-22, Durban, South Africa.
John Cochrane, H. (1998). What Do The VARs Mean? Measuring the Output Effects of Monetary Policy'. Journal of Monetary Economics.PP.277-300.
Terasvirta, T. (1998). Modeling economic relationships with smooth transition regressions, in A. Ullah and D. Giles (eds), Handbook of Applied Economic Statistics, Dekker, New York, pp. 229-246.
Van Dijk, D, Hans, F and Philip, H. (1999). Modeling Multiple Regimes in the Business Cycle, Macroeconomic Dynamics, Vol. 3.