Karindi, D. R., Rufi’i and Rachmadtullah, R. (2025) “Development of problem-based learning digital teaching materials using heyzine flipbooks for the matrix topic”, Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika, 8(2), pp. 354–368. doi: 10.30606/absis.v8i2.3219.