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"A characterization of P4-indifference graphs."
Chính T. Hoàng, Frédéric Maffray, Marc Noy (1999)
- Chính T. Hoàng, Frédéric Maffray, Marc Noy:
A characterization of P4-indifference graphs. J. Graph Theory 31(3): 155-162 (1999)
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