References
- Proc. Amer. Math. Soc. v.62 On the trace of an idempotent in group ring Cliff, G.H.;Sehgal, S.K.
- The Algebraic Structure of Group Rings Passman, D.S.
- Comm. Korean Math. Soc. v.11 On the group ring of Klein's four group Park, Won-Sun
- Comm. Korean Math. Soc. v.12 The units and idempotents in the group ring of a finite cyclic group Park, Won-Sun
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Korean Ann. Math.
v.15
Idempotents in the Group Ring K
$(Z_n{\times}Z_n)$ Park, Won-Sun;Im, Bok-Hee - Arch Math. v.28 Group rings without nontrivial idempotent Sehgal, S.K.;Zassenhaus, H.J.
- Topics in Group Rings Sehgal, S.K.