Author: Šulka, Robert

Šulka, Robert: Note on the Nilpotency in Compact $H$-Semigroups. (English). Matematický časopis, vol. 18 (1968), issue 2, pp. 105-112
Šulka, Robert: Note on the Ševrin radical in semigroups. (English). Matematický časopis, vol. 18 (1968), issue 1, pp. 57-58
Šulka, Robert: On the Nilpotency in Semigroups. (English). Matematický časopis, vol. 18 (1968), issue 2, pp. 148-157

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