CARNIELLI, Walter. Ernst Schröder, "Parafrasi Schröderiane. Ovvero: Ernst Schröder, Leoperazioni del Calcolo Logico". Logic and Logical Philosophy, [S. l.], v. 20, n. 3, p. 267–272, 2011. DOI: 10.12775/LLP.2011.016. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2011.016. Acesso em: 8 jul. 2025.