References
- S. Lang, Algebraic Number Theory, Second edition, Springer-Verlag, New York, 1994.
- J. Lee, Characterization of a cyclic group ring in terms of character values, Commun. Korean Math. Soc. 30(1) (2015), 1-5. https://doi.org/10.4134/CKMS.2015.30.1.001