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Puš, Vladimír
Representation of semigroups by products of simple graphs. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 30 (1989), issue 2, pp. 227-234
MSC: 05C38, 05C99, 18A30, 20M14, 20M30 | MR 1014122 | Zbl 0678.05060
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[7] Trnková V.: Isomorphisms of products of infinite connected graphs. Comment. Math.Univ. Carolinae 25 (1984), 303-317. MR 0768819
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