Collier, P. and W. Gunning (1995): &quot; Trade policy and regional integration: Implications for the relations between Europe and Africa &quot; , The World Economy, vol.18, No.3, May.
Collier, P. y W. Gunning (1995): &quot; Trade policy and regional integration: Implications for the relations between Europe and Africa &quot; , The World Economy, vol. 18, Nº 3, mayo.