ZAPATA RAMÍREZ, Daniel Eduardo; SARMIENTO CASTILLO, Germanía del Pilar. Economic impact of the COVID-19 pandemic on construction companies: an analysis based on the Gray Rhino Theory. Revista Tecnológica - ESPOL, Guayaqui, EC, v. 37, n. 2, p. 243–258, 2025. DOI: 10.37815/rte.v37n2.1337. Disponível em: https://rte.espol.edu.ec/index.php/tecnologica/article/view/1337. Acesso em: 12 feb. 2026.