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Reference17 articles.
1. S. A. Amitsur, A general theory of radicals I,Amer. J. Math. 74 (1953), 774–786; II,Amer. J. Math. 76 (1954), 100–125; III,Amer. J. Math 76 (1954), 126–136.
2. J. Bosák, On radicals of semigroups,Mat. Časopis Sloven. Akad. Vied. 12 (1962), 230–234 (in Russian).
3. A. H. Clifford, Semigroups without nilpotent ideals,Amer. J. Math. 71 (1949), 46–58.
4. A. H. Clifford andG. B. Preston,The algebraic theory of semigroups, I, II, Providence 1961 and 1967.
5. H. J. Hoehnke, Structure of semigroups,Canad. J. Math. 18 (1966), 449–491.