Mendoza, Diana C. “Didactic Transposition in Teaching Variational Thinking: A Systematic Review of the Literature (2013–2025)”. Scientific journal T&E 2, no. 1 (September 30, 2025): 110–154. Accessed October 7, 2025. https://revistas.up.ac.pa/index.php/scientific_journal/article/view/7503.