OSSOLA, R. A modest step towards fixed parities. PSL Quarterly Review, [S. l.], v. 34, n. 136, 2013. DOI: 10.13133/2037-3643/10726. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/10726. Acesso em: 9 apr. 2025.