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Author: Nieminen, Juhani

• Chajda, Ivan; Nieminen, Juhani; Zelinka, Bohdan: Tolerances and orderings on semilattices. (English). Archivum Mathematicum, vol. 19 (1983), issue 3, pp. 125-131
• Nieminen, Juhani: On prime and principal ideals on graphs. (English). Archivum Mathematicum, vol. 15 (1979), issue 3, pp. 151-154
• Nieminen, Juhani: Operations on graphs determining congruences on graphs. (English). Archivum Mathematicum, vol. 14 (1978), issue 4, pp. 215-218
• Nieminen, Juhani: On structural properties of normality relations on lattices. (English). Archivum Mathematicum, vol. 13 (1977), issue 3, pp. 159-167
• Nieminen, Juhani: Tolerance relations on simple ternary algebras. (English). Archivum Mathematicum, vol. 13 (1977), issue 2, pp. 105-109