Marhami M, Dasari D, Suryadi D, Juandi D. Epistemological obstacles in combinatorics as praxeological gaps among pre-service mathematics teachers. J. Elemen [Internet]. 2026 Jul. 31 [cited 2026 Aug. 20];12(3):710-23. Available from: https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/35192