Agung Firmansyah, St. Budi Waluya, Isnarto. “Strategic Thinking in Mathematical Problem Solving Among Students With Special Educational Needs: A Systematic Literature Review”. International Journal of Special Education, vol. 41, no. 7s, June 2026, pp. 317-39, https://www.internationalsped.com/index.php/ijse/article/view/3243.