E. Paiva and F. Pereira.
"Extraction and enrichment of features to improve complaint text classification performance", in <em>Anais do XVIII Encontro Nacional de Inteligência Artificial e Computacional</em>, Evento Online, 2021, pp. 338-349, doi: <a href="https://doi.org/10.5753/eniac.2021.18265">https://doi.org/10.5753/eniac.2021.18265</a>.