Kashif, M., I.- ud-D. Shehzad, S. Bokhari, and N. Munir. “RESULTS OF INTERBANK EXCHANGE RATES FORECASTING USING STATE SPACE MODEL”. Pakistan Journal of Statistics and Operation Research, Vol. 4, no. 2, July 2008, pp. 111-9, doi:10.18187/pjsor.v4i2.54.