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| 2006 | ||
|---|---|---|
| 1 | S. Panma, N. Na Chiangmai, Ulrich Knauer, Sr. Arworn: Characterizations of Clifford semigroup digraphs. Discrete Mathematics 306(12): 1247-1252 (2006) | |
| 1 | Srichan Arworn (Sr. Arworn) | [1] |
| 2 | Ulrich Knauer | [1] |
| 3 | S. Panma | [1] |
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