Liu, Xiaogang, and Sanming Zhou. “Spectral Properties of Unitary Cayley Graphs of Finite Commutative Rings”. The Electronic Journal of Combinatorics 19, no. 4 (October 25, 2012): P13. Accessed March 17, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v19i4p13.