TAFUNELL, X. Financial returns of Spanish business, 1880-1981: An estimation from a sectorial point of view. Revista de Historia Industrial — Industrial History Review, [S. l.], n. 18, p. 71–112, 2017. Disponível em: https://revistes.ub.edu/index.php/HistoriaIndustrial/article/view/18549. Acesso em: 12 apr. 2025.