LETI, G. The International Activities of Italian Statisticians Prior to the Second World War. Statistica, [S. l.], v. 64, n. 2, p. 317–331, 2004. DOI: 10.6092/issn.1973-2201/41. Disponível em: https://rivista-statistica.unibo.it/article/view/41. Acesso em: 26 oct. 2021.