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"A circular graph - counterexample to the Duchet kernel conjecture."
A. Apartsin, E. Ferapontova, Vladimir Gurvich (1998)
- A. Apartsin, E. Ferapontova, Vladimir Gurvich:
A circular graph - counterexample to the Duchet kernel conjecture. Discret. Math. 178(1-3): 229-231 (1998)
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