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, v. 31, n. 3, p. Autores: Josselyn Caiza , Marjorie Salas , Carolina Guevara y José Ramírez, 23 Nov. 2021.