[1]
R. A. Díaz Díaz, D. C. Verján Ávila, and J. A. Vera Calderón, “Analysis of international trade of the department of Tolima: Application of the gravity model in the period 2009-2019”, in Challenges and Trends for the Sustainability of Organizations in Scenarios of Uncertainty, Colombia,CO: Sello Editorial UNAD, 2022, pp. 224–247. doi: 10.22490/9789586518352.10.