MOHAMAD, N. N.; MOHAMED, I.; KOK-HAUR, N.; YAHYA, M. S. Efficient estimation in ZIP models with applications to count data. Kuwait Journal of Science, [S. l.], v. 45, n. 3, 2018. Disponível em: https://journalskuwait.org/kjs/index.php/KJS/article/view/3328. Acesso em: 1 may. 2026.