SULMA et al. Penerapan Teori Premi Joint Life dalam Perhitungan Premi Asuransi Jiwa Produk Joint Life Care Allianz Indonesia. Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika, [S. l.], v. 9, n. 1, p. 123–128, 2026. DOI: 10.30605/proximal.v9i1.7979. Disponível em: https://e-journal.my.id/proximal/article/view/7979. Acesso em: 9 feb. 2026.