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"Total colouring regular bipartite graphs is NP-hard."
Colin J. H. McDiarmid, Abdón Sánchez-Arroyo (1994)
- Colin J. H. McDiarmid, Abdón Sánchez-Arroyo:
Total colouring regular bipartite graphs is NP-hard. Discret. Math. 124(1-3): 155-162 (1994)
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