IBRAHIM, Rose Irnawaty; MOHD NORDIN, Norazmir. Analysis of Mortality Improvement on the Pension Cost Due to Aging Population. MATEMATIKA, [S. l.], v. 36, n. 3, p. 209–216, 2020. DOI: 10.11113/matematika.v36.n3.1273. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/1273. Acesso em: 29 mar. 2024.