ADDIS, Gezahagne Mulat. Updating the Fundamental Theorem of Homomorphism of General Universal Algebras. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 10, n. 1, p. 61–73, 2014. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/707. Acesso em: 15 sep. 2025.