1. S. K. Arora, Sudhir Batra, Stephen D. Cohen and Manju Pruthi,Primitive Idempotents of a cyclic Group algebra, Southeast Asian Bulletin of Mathematics26(4) (2002), 549–557.
2. S. K. Arora, Sudhir Batra and Stephen D. Cohen,Primitive Idempotents of a cyclic Group algebra II, Southeast Asian Bulletin of Mathematics (accepted for publication)
3. Sudhir Batra, Ph. D. Thesis, submitted to M. D. University Rohtak, India (1999).
4. Sudhir Batra and S. K. Arora,Minimal Quadratic Residue Cyclic Codes of Length p n , J. Appl. Math. & Computing(old:KJCAM)8(3) (2001), 531–547.
5. Harriet Griffin,Elementary Theory of Numbers, McGraw-Hill Book Company, New York, 1954.