Juliyanti, Hanni. “An Analysis of Mathematics Learning Difficulties Among High-Ability Students in Solving Systems of Linear Equations in Two Variables (SLETV)”. Journal of Matematics In Teaching and Learning, vol. 3, no. 2, June 2025, pp. 275-88, doi:10.56874//jmtl.2025.v3.i2/2628/5.