A. Murillo Rodríguez, W. Guerrero, and D. Cuaical Tapia, “Factors influencing the probability of affiliation to the social security system among informal sector workers in Ecuador”, Cuestiones Económicas, vol. 35, no. 1, p. Autores: Angie Murillo, Wilma Guerrero y Danilo Cuaical, Jun. 2025.