1Dickey, D.A, 1981. Fuller W.A. Likelihood ratio statistics for auto regressive time series with unit root, Econometrica.
2Granger, C.W.J, 1988. Some recent developments in a concept of causality. Journal of Econometrics 39(1).
3Johansan, S, 1988. Statistical analysis of co-integration vectors. Journal of Economic Dynamic and Control (12), 231-254
4Getnet, K, Verbeke W., price transmission in the grain cation of ARDL approach to 33(11). Viaene, J., 2005. Modeling spatial markets of Ethiopia with an appliwhite teff. Agricultural Economics
5Ghosh, M, 2003. Spatial integration of wheat market in India: Evidence from co-integration Tests. Oxford Development Studies 31 (2).
6Ravallion. M., 1986. Testing market integration. American Journal of Agricultural Economics, (68).
7Zhou, Z.Y, 2000. Integration of rice markets: the case of southern China. Contemporary Economic Policy, 18(1).
