SAMOSIR, B.; MUJID, A. .; NOVIYANTI, M. Improving Students’ Problem-Solving Skills and Self-Confidence through Ratiolib-Assisted Problem-Based Learning. Indonesian Journal of Advanced Research, [S. l.], v. 3, n. 11, p. 1709–1726, 2024. DOI: 10.55927/ijar.v3i11.12066. Disponível em: https://journal.formosapublisher.org/index.php/ijar/article/view/12066. Acesso em: 21 apr. 2026.