Jesus, Gabriela, Fabiano Cutigi Ferrari, Daniel de Paula Porto, and Sandra Camargo Pinto Ferraz Fabbri.
" Gamification in Software Testing: A Characterization Study." <em>Proceedings of the 3rd Brazilian Symposium on Systematic and Automated Software Testing,
São Carlos/SP, 2018</em>. SBC, 2018,  
pp.39–48.