Pessoa, M., 		Melo, R., 		Haydar, G., 		Oliveira, D., 		Carvalho, L., 		Oliveira, E., 		Conte, T., 		Pereira, F., 		Rodrigues, L., & 		Isotani, S.
2021 Nov 22.  An analysis of player types on a gamification platform incorporated into an online judge system. Proceedings of the Brazilian Symposium on Computers in Education (SBIE). [Online] :