A. C. P. Vieira, K. L. Bruch, J. C. Zilli, Z. Felisberto, and G. S. dos Santos, “Vales da Uva Goethe and clusters: an instrument analysis”, PIDCC, vol. 5, no. 4, pp. 109–131, Oct. 2016, doi: 10.16928/2316-8080.v10n3p.109-131.