Partial monounary algebras with common congruence relations
Danica Jakubíková-Studenovská (1982)
Czechoslovak Mathematical Journal
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Danica Jakubíková-Studenovská (1982)
Czechoslovak Mathematical Journal
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Danica Jakubíková-Studenovská (1988)
Czechoslovak Mathematical Journal
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Jan Chvalina (1977)
Archivum Mathematicum
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