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Author: Halaš, R.

• Halaš, R.; Kühr, J.: Subdirectly irreducible sectionally pseudocomplemented semilattices. (English). Czechoslovak Mathematical Journal, vol. 57 (2007), issue 2, pp. 725-735
• Chajda, I.; Halaš, R.; Pinus, A. G.: Algebraic duality of constant algebras. (English). Czechoslovak Mathematical Journal, vol. 49 (1999), issue 2, pp. 415-420