The semigroup of circulant Boolean matrices
Kim Ki-Hang Butler, Štefan Schwarz (1976)
Czechoslovak Mathematical Journal
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Kim Ki-Hang Butler, Štefan Schwarz (1976)
Czechoslovak Mathematical Journal
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Richard A. Brualdi, Bo Lian Liu (1990)
Czechoslovak Mathematical Journal
Similarity:
Štefan Schwarz (1970)
Czechoslovak Mathematical Journal
Similarity: