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Author: Nieminen, Juhani

• Chajda, Ivan; Nieminen, Juhani: Direct decomposability of tolerances on lattices, semilattices and quasilattices. (English). Czechoslovak Mathematical Journal, vol. 32 (1982), issue 1, pp. 110-115
• Chajda, Ivan; Nieminen, Juhani: Atomicity of tolerance lattices. (English). Czechoslovak Mathematical Journal, vol. 30 (1980), issue 4, pp. 606-609