Tolerance distributive and tolerance modular varieties of commutative semigroups
Bedřich Pondělíček (1986)
Czechoslovak Mathematical Journal
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Bedřich Pondělíček (1986)
Czechoslovak Mathematical Journal
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Bedřich Pondělíček (1992)
Czechoslovak Mathematical Journal
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M. Loganathan (1986)
Czechoslovak Mathematical Journal
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