[1] L. Babai, Spectra of Cayley Graphs, J. Combin. Theory Ser. B 27(2) (1979) 180-189,
https://doi.org/10.1016/0095-8956(79)90079-0.
[2] N. Biggs, Algebraic Graph Theory, Cambridge Univ. Press, Cambridge, 1974.
[3] M. Ghorbani, F. Nowroozi Larki, On the spectrum of finite Cayley graphs, J. Discrete Math. Sci. Cryptogr. 21(1)
(2018) 83-112. https://doi.org/10.1080/09720529.2018.1449797.
[4] C. E. Hempel, Metacyclic groups, Comm. Algebra 28(8) (2007) 3865-3897.
https://doi.org/10.1080/00927870008827063.
[5] R.A. Horn, C.R. Johnson, Matrix Analysis, Cambridge University Press, Cambridge, 1986.
[6] M. N. Iradmusa, C. E. Praeger, Two-sided Group Digraphs and Graphs, J. Graph Theory, 82(3)
(2016) 279-295. https://doi.org/10.1002/jgt.21901.
[7] R. Krakovski, B. Mohar, Spectrum of Cayley graphs on the symmetric group generated by transpositions, Lin. Alg. Appl. 437(3) (2012), 1033-1039. https://doi.org/10.48550/arXiv.1201.2167.
[8] D. S. Lyubshin, S. V. Savchenko, Cayley Digraphs with Normal adjacency matrices, Discrete Math.
309(13) (2009), 4343-4348. https://doi.org/10.1016/j.disc.2007.03.086.
[9] J. S. Rose, A course on group theory, Cambridge University Press, Cambridge, 1978.
[10] A. Torgasev, The spectrum of a normal digraph, Univ. Novi Sad, Coll. of papers Fac. Sci. (Ser.
Math.) 17 (1) (1987) 187-200.
[11] Liu, Xiaogang, Sanming Zhou, Eigenvalues of Cayley graphs, arXiv:1809.09829 The Electronic
Journal of Combinatorics, 2(29) (2022).
https://doi.org/10.48550/arXiv.1809.09829