Addis, Gezahagne Mulat. “Updating the Fundamental Theorem of Homomorphism of General Universal Algebras”. American Scientific Research Journal for Engineering, Technology, and Sciences 10, no. 1 (September 21, 2014): 61–73. Accessed July 20, 2024. https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/707.