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• Volume 37

Author: Chajda, Ivan

• Chajda, Ivan: Algebras with principal tolerances. (English). Mathematica Slovaca, vol. 37 (1987), issue 2, pp. 169-172
• Chajda, Ivan: Directly decomposable congruences in varieties with nullary operations. (English). Mathematica Slovaca, vol. 37 (1987), issue 1, pp. 31-35