AYUFAUZIYAH, Nur; UTAMI, Anita Dewi; SUWARMAN, Ramdhan Fazrianto. Effectiveness of Math Universe on Students’ Combinatorics Understanding for Mathematics Olympiad Preparation. Jurnal Pendidikan Edutama, [S. l.], v. 13, n. 1, p. 313–326, 2026. DOI: 10.30734/jpe.v13i1.5270. Disponível em: http://ejurnal.ikippgribojonegoro.ac.id/index.php/JPE/article/view/5270. Acesso em: 5 feb. 2026.