Premia in forward foreign exchange as unobserved components / T.E. Nijman, F.C. Palm, C.C.P. WolffPremia in forward foreign exchange as unobserved components / by Theo N. Nijman, Franz C. Palm and Christian C.P. WolffMore evidence on the dollar risk premium in the foreign exchange market / D. Bams, K. Walkowiak, C.C.P. Wolff