N. Latifah, R. Dwiyansaputra, and G. S. Nugraha, “Multiclass Text Classification of Indonesian Short Message Service (SMS) Spam using Deep Learning Method and Easy Data Augmentation”, MATRIK, vol. 23, no. 3, pp. 663–676, Jun. 2024, doi: 10.30812/matrik.v23i3.3835.