T. Mota, L. Garcia, and C. Martins.
" Where Does Hardness Come From? An Instance Hardness Analysis of Substance-Use Prediction in Brazilian Adolescents", in <em>Anais do XIV Symposium on Knowledge Discovery, Mining and Learning</em>, Cuiabá/MT, 2026, pp. 265-272, doi: <a href="https://doi.org/10.5753/kdmile.2026.31988">https://doi.org/10.5753/kdmile.2026.31988</a>.