AGRAWAL, P.; SRIVASTAVA, O. P. An age and parity dependent model for birth intervals of non-contraceptive population. Statistica, [S. l.], v. 46, n. 4, p. 513–519, 1986. DOI: 10.6092/issn.1973-2201/726. Disponível em: https://rivista-statistica.unibo.it/article/view/726. Acesso em: 6 may. 2024.