1， European Exports and Outward Foreign Direct Investment: A Dynamic Panel Data Approach   by  Peter Egger
2， Price Response of the Production and Import Structure - An Econometric Analysis, FRG 1954-1967  By K. Conrad, Bonn I ) and R. Fahrion, Heidelberg 2)
3， EXPORT GROWTH AND OUTPUT GROWTH: AN APPLICATION OF BOUNDS TESTING APPROACH By Mohsen Bahmani-Oskooee and Maharouf Oyolola
4， Export, Import and Economic Growth: The Case of Transition Economies   By Hakan C¸ etintas¸ Æ Salih Baris¸ik