S. A. Guamán-Ortiz, T. L. Costa-Porras, and H. A. López-Machado, “Economic integration and synchronization of economic cycles in Ecuador: Evidence through Granger causality”, Revista Científica C&M, vol. 4, no. 3, pp. 337–358, Aug. 2026, doi: 10.55813/gaea/rcym/v4/n3/240.