F. Zaffalon <em>et al.</em>" A comparative study between two models that estimate students' ability: ELO and Item Response Theory", in <em>Proceedings of the 30th Brazilian Symposium on Computers in Education</em>, Brasília/DF, 2019, pp. 459-468, doi: <a href="https://doi.org/10.5753/cbie.sbie.2019.459">https://doi.org/10.5753/cbie.sbie.2019.459</a>.