Export Diversification, International Trade, and Economic Growth: A Survey of the Literature.- Structural Change in Exports and Export Diversification: A Look at Colombia over the Period 1990-2008.- Commercial Relations between Colombia and the European Union: An Empirical Approximation in the Light of the Gravity Model.- Export Competitiveness in Colombia: Strengths and Weaknesses of the Economy's Competitive Foundations.- Enhancing Colombia's Export Diversification: A Normative Approximation, with an Emphasis on the European Union's Market.