B. Y. G. P. Putra, A. N. Fitria, T. Rahman, and N. T. Rosita, “GeoGebra-Assisted Problem-Based Learning: Enhancing Students’ Mathematical Problem-Solving Ability”, J.Math.Instr.Soc.Res.Opin., vol. 5, no. 1, pp. 557–568, Mar. 2026.