Cancellative relations and matrices
Ladislav Bican, Aleš Drápal, Tomáš Kepka (1987)
Acta Universitatis Carolinae. Mathematica et Physica
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Ladislav Bican, Aleš Drápal, Tomáš Kepka (1987)
Acta Universitatis Carolinae. Mathematica et Physica
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Aleš Drápal, Tomáš Kepka (1985)
Acta Universitatis Carolinae. Mathematica et Physica
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Tomáš Kepka (1981)
Acta Universitatis Carolinae. Mathematica et Physica
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