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[2] Charles W. Curtis, Irving Reiner: Representation Theory of Finite Groups and Associative Algebras. New York, John Wiley & Sons (Interscience Publishers), 1966. MR 1013113

[3] Irving Kaplansky: Infinite Abelian Groups. Ann Arbor, University of Michigan Press, 1969. MR 0233887

[4] Walter S. Sizer: Representations of Semigroups of Idempotents. Czechoslovak Mathematical Journal, 30 (105), (1980), pp. 369-375. MR 0583617

[5] B. A. F. Wehrfritz: Infinite Linear Groups. New York, Springer-Verlag, 1973. MR 0335656 | Zbl 0261.20038