@inproceedings{inproceedings22d8ae07,
title   = {A quantitative analysis of the most relevant gamification elements in an online learning environment},
author = {Santana, Sivaldo J. de and Souza, Hugo A and Florentin, Victor A. F and Paiva, Ranilson and Bittencourt, I. I and Isotani, Seiji},
year = {2016},
doi = {10.1145/2872518.2891074},
publisher = {ACM},
booktitle   = {International World Wide Web Conference - WWW'16}
}