6Cabllero R. and Engel E. Explaining Investment Dynamics in U.S. Manufacturing: A Generalized (S,s) Approach, Econometrica 67 (4), July 1999, 783 - 826.
7Galindo, Arturo Jose, Schiantarelli, Fabio and Weiss, Andrew Gonzalez A. , Panel smooth transition regression models, Quantitative Finance Research Center Research Paper 165, University of Sydney, August 2005.
8Hansen, B. E. , 1999, "Threshold effects in non -dynamic panels: Estimation, testing and inference," Journal of Econ- ometrics, 93, pp. 345 - 368.
9Hansen, Bruce E. , 2005. "Exact Mean Integrated Squared Error Of Higher Order Kernel Estimators," Econometric Theory, vol. 21 (06), pages 1031 - 1057, December.
10Hansen, Bruce E. , 2006. "Interval forecasts and parameter uncertainty," Journal of Econometrics, vol. 135 ( 1 - 2 ), pages 377 - 398.