Babayo Muhammed Abdullahi, and G.U. Garba. “9A9 Composite Loube I(re) I Magic Squares Infinite Abelian Group As a Miscellany Case of the 3A3 Loube I(re) I Magic Squares Infinite Abelian Group”. Global Journal of Science Frontier Research, vol. 15, no. F2, Jan. 2015, pp. 71-79, https://journalofscience.org/index.php/GJSFR/article/view/100804.