VOUTSADAKIS, G. Categorical Abstract Logic: Hidden Multi-Sorted Logics as Multi-Term π-Institutions. Bulletin of the Section of Logic, [S. l.], v. 45, n. 2, p. 111–124, 2016. DOI: 10.18778/0138-0680.45.2.04. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/1481. Acesso em: 30 apr. 2024.