The Constant Annual Premium and Benefit Reserve for Four Participants in Joint Life Insurance. InPrime: Indonesian Journal of Pure and Applied Mathematics, [S. l.], v. 2, n. 2, p. 97–104, 2020. DOI: 10.15408/inprime.v2i2.14780. Disponível em: https://journal.uinjkt.ac.id/inprime/article/view/14780. Acesso em: 22 dec. 2025.