MOSSES, P. D. Unified Algebras and Action Semantics. DAIMI Report Series, [S. l.], v. 18, n. 272, 1988. DOI: 10.7146/dpb.v18i272.7626. Disponível em: https://tidsskrift.dk/daimipb/article/view/7626. Acesso em: 9 may. 2024.