Benitez, G. B., M. J. do R. Ferreira Lima, L. V. Lerman, and A. G. Frank. “Understanding Industry 4.0: Definitions and Insights from a Cognitive Map Analysis”. Brazilian Journal of Operations & Production Management, vol. 16, no. 2, May 2019, pp. 192-00, doi:10.14488/BJOPM.2019.v16.n2.a3.