KARINDI, Dito Risky; RUFI’I; RACHMADTULLAH, Reza. Development of problem-based learning digital teaching materials using heyzine flipbooks for the matrix topic. Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika, [S. l.], v. 8, n. 2, p. 354–368, 2025. DOI: 10.30606/absis.v8i2.3219. Disponível em: https://journal.upp.ac.id/index.php/absis/article/view/3219. Acesso em: 25 apr. 2026.