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Author: Pondělíček, Bedřich

• Pondělíček, Bedřich: On varieties of regular $*$-semigroups. (English). Czechoslovak Mathematical Journal, vol. 41 (1991), issue 1, pp. 110-119
• Pondělíček, Bedřich: On varieties of regular $*$-semigroups, II. (English). Czechoslovak Mathematical Journal, vol. 41 (1991), issue 3, pp. 512-517