WRAY, K. Brad. Reinterpreting § 56 of frege’s the foundations of arithmetic. auslegung: a journal of philosophy, [S. l.], v. 20, n. 2, p. 76–82, 1995. DOI: 10.17161/AJP.1808.9403. Disponível em: https://journals.ku.edu/auslegung/article/view/13078.. Acesso em: 18 may. 2024.