6Breitung, J., 2002. Nonparametric tests for unit roots and cointegration. Journal of Econometrics 108, 343-363.
7Berument, H., and M.M.Jelassi, 2002. The Fisher Hypothesis: A Multi-Country Analysis. Applied Economics 34, p1645-1655.
8Choi, In, and Pentti Saikonen, 2004 (a). Testing linearity in cointegration smooth transition regressions. The Econometrics Journal 7,341-365.
9Choudhry, A., 1997. Cointegratlon Analysis of the Inverted Fisher Effect: Evidence from Belgium, France and Germany. Applied Economic Letters 4, p257-260.
10Christopoulos, D.K., and Miguel A. Leon-Ledesma 2006. A Longrun nonlinear approach to the Fisher effect, Working paper, p1-35.