DE IACO, Moira. Wittgenstein to Sraffa: Two Newly-discovered Letters from February and March 1934. Nordic Wittgenstein Review, [S. l.], v. 8, n. 1-2, p. 209–223, 2019. DOI: 10.15845/nwr.v8i1.3532. Disponível em: https://www.nordicwittgensteinreview.com/article/view/3532. Acesso em: 22 feb. 2025.