Siahaan HAS, Siagian MD, Rikayanti. Exploring Students’ Conceptual Images of Function and Their Properties: A Hermeneutic Phenomenological Study. Didact. Math. [Internet]. 2026 Jul. 20 [cited 2026 Aug. 6];8(2):420-44. Available from: https://www.ejournal.unma.ac.id/index.php/dm/article/view/19093