J. C. Valencia Martínez and J. Salinas-Ávila, “FINANCIAL RESILIENCE AND BUSINESS HETEROGENEITY IN THE FACE OF COVID-19: EVIDENCE FROM THE COLOMBIAN COMMERCE SECTOR”, Semest. Econ., vol. 29, no. 66, pp. 1–25, Mar. 2026, doi: 10.22395/seec.v29n66a5146.