M. I. Kargapolov, Ju. I. Merzljakov, Fundamentals of the theory of groups, Graduate Text in Mathematics, 62, Springer-Verlag, 1979
2.
O. H. Kegel, B. A. F. Wehrfritz, Locally Finite Groups, North-Holland Publishing Company, Amsterdam, 1973
3.
N. V. Kroshko, V. I. Sushchansky, “Direct Limits of symmetric and alternating groups with strictly diagonal embeddings”, Arch. Math., 71 (1998), 173–182
4.
J. D. P. Meldrum, Wreath products of groups and semigroups, Pitman Monographs and Surveys in Pure and Applied Mathematics, 74, Longman, Harlow, 1995