DAELEMANS, F. R.J. Lesthaeghe, The decline of Belgian fertility, 1800-1970. BMGN - Low Countries Historical Review, [S. l.], v. 96, n. 3, p. 537–539, 1981. DOI: 10.18352/bmgn-lchr.2277. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102458. Acesso em: 3 may. 2024.