Extreme Learning Mechanism for Classification & Prediction of Soil Fertility index. Journal of Pharmaceutical Negative Results, [S. l.], p. 37–43, 2022. DOI: 10.47750/pnr.2022.13.S06.006. Disponível em: https://pnrjournal.com/index.php/home/article/view/1622.. Acesso em: 3 jun. 2026.