Homogeneous digraphs
Bohdan Zelinka (1971)
Czechoslovak Mathematical Journal
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Bohdan Zelinka (1971)
Czechoslovak Mathematical Journal
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Balogh, József, Bollobás, Béla, Morris, Robert (2007)
The Electronic Journal of Combinatorics [electronic only]
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Antoaneta Klobučar (1999)
Mathematica Slovaca
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