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• Volume 14

Author: Chvalina, Jan

• Chvalina, Jan: Characterizations of certain monounary algebras. I. (English). Archivum Mathematicum, vol. 14 (1978), issue 2, pp. 85-97
• Chvalina, Jan: Characterizations of certain monounary algebras. II. (English). Archivum Mathematicum, vol. 14 (1978), issue 3, pp. 145-153