M. Cabezas González, S. Casillas Martín, and A. V. Basantes Andrade, “The Self-Perceived Digital Competence of Social Educators in Spain: Influence of Demographic and Professional Variables”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 10, no. 6, pp. 2251–2260, Dec. 2020.