Zapata Ramírez, Daniel Eduardo, and Germanía del Pilar Sarmiento Castillo. 2025. “Economic Impact of the COVID-19 Pandemic on Construction Companies: An Analysis Based on the Gray Rhino Theory”. Revista Tecnológica - ESPOL 37 (2): 243-58. https://doi.org/10.37815/rte.v37n2.1337.