Ramaswamy, H. N., and C. R. Veena. “On the Energy of Unitary Cayley Graphs”. The Electronic Journal of Combinatorics 16, no. 1 (July 24, 2009): N24. Accessed March 16, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v16i1n24.