Geodesic
Direct decomposability of tolerances and congruences on semigroups
Czechoslovak Mathematical Journal, Tome 38 (1988) no. 4, pp. 701-704

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MR Zbl
DOI : 10.21136/CMJ.1988.102265
Classification : 08A30, 20M14 
Pondělíček, Bedřich. Direct decomposability of tolerances and congruences on semigroups. Czechoslovak Mathematical Journal, Tome 38 (1988) no. 4, pp. 701-704. doi: 10.21136/CMJ.1988.102265
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     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102265/}
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