1. J. M. Bateman, “On the solvability of unit groups of group algebras,” Trans. Am. Math. Soc.,157, 73–86 (1971).
2. K. Motose and Y. Ninomiya, “On the solvability of unit groups of group rings,” Math. J. Okayama Univ.,15, 209–214 (1972).
3. A. A. Bovdi and I. I. Khripta, “Finite-dimensional group algebras with solvable multiplicative group,” in: Proceedings of the Eighteenth Scientific Conference at State University, Mathematical Science-Section [in Russian], Uzhgorod (1974).
4. I. B. Passi, D. Passman, and S. K. Sehgal, “Lie solvable group rings,” Canad. J. Math.,25, 748–757 (1973).
5. A. A. Bovdi, Group Rings [in Russian], Izd. Uzhgorodskii Cos. Univ. (1974).