Silva, Samantha Adeline Córdova da, and Caroline Moraes Coelho. “Study Study: Mobile Application Using Gamifications for Students Who Will Do the National High School Exam”. INFOCOMP Journal of Computer Science, vol. 16, no. 1-2, Dec. 2017, pp. 41-45, http://177.105.60.18/index.php/infocomp/article/view/551.