Subdirectly irreducible groupoids in some varieties
Jerzy Płonka (1983)
Commentationes Mathematicae Universitatis Carolinae
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Jerzy Płonka (1983)
Commentationes Mathematicae Universitatis Carolinae
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Aleš Drápal, Tomáš Kepka (1985)
Commentationes Mathematicae Universitatis Carolinae
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Jaroslav Ježek, Tomáš Kepka (1981)
Commentationes Mathematicae Universitatis Carolinae
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