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Author: Jakubíková-Studenovská, Danica

• Jakubíková-Studenovská, Danica: Retract irreducibility of connected monounary algebras. II. (English). Czechoslovak Mathematical Journal, vol. 47 (1997), issue 1, pp. 113-126
• Jakubíková-Studenovská, Danica: Retract varieties of monounary algebras. (English). Czechoslovak Mathematical Journal, vol. 47 (1997), issue 4, pp. 701-716