Caiza, J.; Salas, M.; Guevara, C.; Ramírez, J. Identification of Factors of Vulnerability of Self-Employed Workers and in Relation to Dependency in Times of COVID-19 in Ecuador. Cuestiones Económicas 2021, 31, Autores: Josselyn Caiza , Marjorie Salas , Carolina Guevara y José Ramírez.