P. Siva Prasad , G. Srinivasa Rao, D. Madhusudhana Rao, K. Revathi. Semi Space Homomorphism in Semi Groups. IJAST [Internet]. 2020May1 [cited 2024May4];29(06):5262 -5265. Available from: http://sersc.org/journals/index.php/IJAST/article/view/19586